{"id":12313,"date":"2026-04-02T09:31:44","date_gmt":"2026-04-02T01:31:44","guid":{"rendered":"https:\/\/telycam.com\/?p=12313"},"modified":"2026-04-03T10:44:15","modified_gmt":"2026-04-03T02:44:15","slug":"pdaf-vs-cdaf-in-ptz-cameras","status":"publish","type":"post","link":"https:\/\/telycam.com\/pdaf-vs-cdaf-in-ptz-cameras.html","title":{"rendered":"PDAF vs. CDAF in PTZ Cameras"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"12313\" class=\"elementor elementor-12313\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-052df57 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"052df57\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ac98fe2 elementor-widget elementor-widget-heading\" data-id=\"ac98fe2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">PDAF vs. CDAF in PTZ Cameras: <br>Which Autofocus Technology Delivers Better Results?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fd52422 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"fd52422\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b24e5bd elementor-widget elementor-widget-text-editor\" data-id=\"b24e5bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">In live production, focus stability directly affects how audiences perceive content quality. When a PTZ camera hunts back and forth mid-shot\u2014a problem known as <strong>focus hunting<\/strong>\u2014the result is blurry footage that no post-production can restore.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The root cause comes down to autofocus technology. There are two approaches used in modern PTZ cameras: <strong>CDAF (Contrast Detection Autofocus)<\/strong> finds focus through trial and error, while <strong>PDAF (Phase Detection Autofocus)<\/strong> calculates the focal point directly in a single step.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">This guide breaks down how each works\u2014and why professional PTZ production is increasingly moving toward PDAF.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f17a2bc elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"f17a2bc\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__f17a2bc\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__f17a2bc\" aria-expanded=\"true\" aria-label=\"Close table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__f17a2bc\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5913007 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"5913007\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b3f6b88 elementor-widget elementor-widget-heading\" data-id=\"b3f6b88\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How Autofocus Works in PTZ Cameras?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca14c07 elementor-widget elementor-widget-text-editor\" data-id=\"ca14c07\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><a href=\"https:\/\/telycam.com\/ndi-ip-ptz-camera\"><strong>PTZ camera<\/strong><\/a> autofocus has one fundamental job: move the lens to the exact position where light from the subject converges precisely on the image sensor. Every autofocus system must answer two questions\u2014which direction should the lens move, and how far? How different technologies answer these questions determines everything about focus speed, stability, and reliability.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">For standard cameras, this is a manageable problem. For PTZ cameras, it&#8217;s a significantly harder one.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1288497 elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"1288497\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#000000\" width=\"800px\" height=\"800px\" viewBox=\"0 0 256 256\" id=\"Flat\"><path d=\"M140,32.00049v191.999a8.00427,8.00427,0,0,1-16.00854,0V46.95117L88.44629,70.64258a8.00192,8.00192,0,1,1-8.88184-13.313l47.99048-31.98584A8.00467,8.00467,0,0,1,140,32.00049Z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tExtreme zoom ranges compress your margin for error. \t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tAt wide angle, a lens might cover a depth of field of several meters. At full telephoto on a 30x PTZ, that same lens may have a depth of field measured in centimeters\u2014where even the smallest focus error becomes immediately visible.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-466b7f3 elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"466b7f3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#000000\" width=\"800px\" height=\"800px\" viewBox=\"0 0 256 256\" id=\"Flat\"><path d=\"M184,223.98828a8.00008,8.00008,0,0,1-8,8H80.43555q-.21827.01245-.43653.01221a8.00346,8.00346,0,0,1-6.26757-12.9751l87.54687-116.82178a40.00778,40.00778,0,1,0-70.1377-37.771A8,8,0,1,1,76.4043,58.2002a56.00758,56.00758,0,1,1,98.02734,53.11523c-.07324.1084-.14844.21484-.22754.31934L96.001,215.98828H176A8.00039,8.00039,0,0,1,184,223.98828Z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tLong shooting distances introduce real-world interference.\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tPTZ cameras routinely target subjects 50 to 200 meters away, where atmospheric conditions like heat shimmer and low ambient light degrade the image contrast that autofocus systems depend on.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd61411 elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"fd61411\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#000000\" width=\"800px\" height=\"800px\" viewBox=\"0 0 256 256\" id=\"Flat\"><path d=\"M184,168.00488a63.99178,63.99178,0,0,1-109.24219,45.251,8,8,0,0,1,11.31446-11.313,47.994,47.994,0,1,0,33.93554-81.93408,7.99947,7.99947,0,0,1-6.55469-12.58594L160.626,40H80a8,8,0,0,1,0-16h95.9873A7.99946,7.99946,0,0,1,182.542,36.58594l-48.28125,69.00683A64.055,64.055,0,0,1,184,168.00488Z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tRapid movement leaves no time to re-acquire focus. \t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tPan, tilt, and zoom transitions can shift the focal distance dramatically within seconds. In live production, the autofocus system must maintain lock throughout continuous motion\u2014not just after the camera stops.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1e5550d elementor-position-inline-start elementor-view-default elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"1e5550d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"#000000\" width=\"800px\" height=\"800px\" viewBox=\"0 0 256 256\" id=\"Flat\"><path d=\"M180,96V224a8,8,0,0,1-16,0V168H76a8.00033,8.00033,0,0,1-7.54395-10.66211l47.99707-136a7.99988,7.99988,0,0,1,15.0879,5.32422L87.30664,152H164V96a8,8,0,0,1,16,0Z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tProfessional PTZ deployment adds further requirements.\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tContinuous Autofocus (CAF), AI-based subject tracking, and focus stability through zoom transitions are all expected in modern PTZ workflows\u2014capabilities that go well beyond what standard autofocus architectures were built to deliver.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7177f3e elementor-widget elementor-widget-text-editor\" data-id=\"7177f3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>These demands explain why the autofocus technology inside a PTZ camera matters more than in almost any other camera category\u2014and why the industry is actively moving away from older approaches.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e6ec4b3 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"e6ec4b3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-18ba465 elementor-widget elementor-widget-heading\" data-id=\"18ba465\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Is Contrast Detection Autofocus(CDAF)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f083953 elementor-widget elementor-widget-text-editor\" data-id=\"f083953\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Contrast Detection Autofocus (CDAF) is the oldest and most widely used autofocus method in cameras today. To understand how it works, it helps to start with something familiar: your own eyes.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Human vision is itself contrast-based. When you look at an object, your brain continuously evaluates the sharpness of what you&#8217;re seeing and adjusts the lens of your eye\u2014the crystalline lens\u2014until contrast is maximized. You don&#8217;t consciously think about this; it simply happens. CDAF works on the same principle, except the camera&#8217;s image sensor plays the role of your eye, and a motor drives the lens.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae2f53d elementor-widget elementor-widget-heading\" data-id=\"ae2f53d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How CDAF Actually Works<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-db5ca65 e-con-full e-flex wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"db5ca65\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-efc860b elementor-widget elementor-widget-image\" data-id=\"efc860b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1280\" height=\"1064\" src=\"https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/Circles_of_confusion_lens_diagram.svg.png\" class=\"attachment-full size-full wp-image-12338\" alt=\"Circles_of_confusion_lens_diagram\" srcset=\"https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/Circles_of_confusion_lens_diagram.svg.png 1280w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/Circles_of_confusion_lens_diagram.svg-300x249.png 300w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/Circles_of_confusion_lens_diagram.svg-1024x851.png 1024w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/Circles_of_confusion_lens_diagram.svg-768x638.png 768w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-637737f elementor-widget elementor-widget-text-editor\" data-id=\"637737f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The underlying logic is straightforward. When a lens is out of focus, each point of light from the subject spreads into a small disk on the sensor\u2014called a circle of confusion. Overlapping discs cause adjacent pixels to blur together, pulling contrast down. When focus is correct, those discs collapse back into sharp points, edges become crisp, and contrast peaks.<\/p><p>\u00a0<\/p><p><span style=\"color: #808080;\"><em>*Diagram showing circles of confusion for point source too close, in focus, and too far<\/em><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-02d3f93 elementor-widget elementor-widget-text-editor\" data-id=\"02d3f93\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">To find that peak, the camera isolates a zone within the frame\u2014the AF comparison range\u2014and drives the lens through positions one by one, calculating a contrast value at each step. Think of it like slowly turning a radio dial: the signal gets stronger as you approach the right frequency, and you stop when it&#8217;s clearest. The camera does the same, locking focus when the contrast value hits its maximum.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1899d90 elementor-widget elementor-widget-image\" data-id=\"1899d90\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1269\" height=\"819\" src=\"https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/What-Is-Contrast-Detection-Autofocus-CDAF.jpg\" class=\"attachment-full size-full wp-image-12337\" alt=\"What Is Contrast Detection Autofocus CDAF\" srcset=\"https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/What-Is-Contrast-Detection-Autofocus-CDAF.jpg 1269w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/What-Is-Contrast-Detection-Autofocus-CDAF-300x194.jpg 300w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/What-Is-Contrast-Detection-Autofocus-CDAF-1024x661.jpg 1024w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/03\/What-Is-Contrast-Detection-Autofocus-CDAF-768x496.jpg 768w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8403838 elementor-widget elementor-widget-text-editor\" data-id=\"8403838\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The catch is that the camera can only identify the peak after passing through it. Every time the scene changes, the sweep restarts from scratch, the lens overshoots, then drives back\u2014producing the back-and-forth oscillation viewers see on screen, commonly known as focus hunting.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1d34169 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"1d34169\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7527661 elementor-widget elementor-widget-heading\" data-id=\"7527661\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Is Phase Detection Autofocus(PDAF)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-408d55d e-con-full e-flex wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"408d55d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-276197d elementor-widget__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"276197d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Interestingly, Phase Detection Autofocus (PDAF) also has a connection to human vision\u2014but a different one. Rather than mimicking how the eye adjusts focus, it mirrors how the brain determines <em>distance<\/em>.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Because your two eyes are positioned slightly apart, each captures the world from a marginally different angle. Your brain compares these two slightly offset images and uses the difference\u2014the parallax\u2014to calculate how far away an object is. This is why closing one eye makes depth perception noticeably harder. PDAF applies exactly this logic to autofocus.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f516060 elementor-widget__width-inherit elementor-widget elementor-widget-image\" data-id=\"f516060\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram.jpg\" class=\"attachment-full size-full wp-image-12358\" alt=\"binocular parallax diagram\" srcset=\"https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram.jpg 1920w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram-300x169.jpg 300w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram-1024x576.jpg 1024w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram-768x432.jpg 768w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram-1536x864.jpg 1536w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/04\/binocular-parallax-diagram-1320x743.jpg 1320w\" sizes=\"(max-width: 1920px) 100vw, 1920px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Binocular parallax diagram<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f43010 elementor-widget elementor-widget-heading\" data-id=\"9f43010\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">How PDAF Works<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c162e32 elementor-widget elementor-widget-text-editor\" data-id=\"c162e32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1066\" data-end=\"1188\">Instead of searching back and forth to find the sharpest image, PDAF determines focus in a more direct and calculated way.<\/p><p data-start=\"1190\" data-end=\"1420\">Inside the image sensor, there are specially designed pixel pairs\u2014often referred to as phase detection pixels. These pixels are partially masked so that each one receives light from only one side of the lens, either left or right.<\/p><p data-start=\"1422\" data-end=\"1534\">As a result, the camera effectively captures two slightly different versions of the same scene at the same time.<\/p><p data-start=\"1536\" data-end=\"1706\">When the image is out of focus, these two versions do not perfectly align. By analyzing how far they are offset\u2014and in which direction\u2014the camera can instantly determine:<\/p><ul data-start=\"1707\" data-end=\"1796\"><li data-section-id=\"wxnca\" data-start=\"1707\" data-end=\"1747\">The direction the lens needs to move<\/li><li data-section-id=\"1dxkvpu\" data-start=\"1748\" data-end=\"1796\">The exact distance required to achieve focus<\/li><\/ul><p data-start=\"1798\" data-end=\"1922\">This allows the lens to move directly to the correct position in a single step, rather than relying on repeated adjustments.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c823d94 e-con-full e-flex wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"c823d94\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b4d50bd elementor-widget elementor-widget-text-editor\" data-id=\"b4d50bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1924\" data-end=\"2077\">You can think of it like a rangefinder. Instead of moving step by step to \u201cfind\u201d the correct distance, you measure it once and go straight to the answer.<\/p><p data-start=\"2079\" data-end=\"2279\">Because of this, PDAF is able to achieve focus quickly and with high consistency, making it particularly well-suited for real-time applications such as live streaming, broadcasting, and event capture.<\/p><p data-start=\"2079\" data-end=\"2279\">\u00a0<\/p><p style=\"text-align: right;\" data-start=\"2079\" data-end=\"2279\"><span style=\"color: #808080;\"><em>*PDAF performance demonstration video<\/em><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e35ab3d elementor-widget elementor-widget-video\" data-id=\"e35ab3d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;hosted&quot;,&quot;autoplay&quot;:&quot;yes&quot;,&quot;mute&quot;:&quot;yes&quot;,&quot;loop&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-hosted-video elementor-wrapper elementor-open-inline\">\n\t\t\t\t\t<video class=\"elementor-video\" src=\"https:\/\/telycam.com\/wp-content\/uploads\/2024\/09\/PDAF.webm\" autoplay=\"\" loop=\"\" muted=\"muted\" controlsList=\"nodownload\"><\/video>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4a0910a e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"4a0910a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-72aa512 elementor-widget elementor-widget-heading\" data-id=\"72aa512\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">PDAF vs. CDAF \u2014 Head-to-Head<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f586d00 elementor-widget elementor-widget-text-editor\" data-id=\"f586d00\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"220\" data-end=\"372\">After understanding how both autofocus systems work, the next logical question is simple:<br data-start=\"309\" data-end=\"312\" \/><strong data-start=\"312\" data-end=\"372\">How do PDAF and CDAF actually compare in real-world use?<\/strong><\/p><p data-start=\"374\" data-end=\"561\">While both technologies are capable of achieving accurate focus, they differ significantly in <em data-start=\"468\" data-end=\"473\">how<\/em> they get there\u2014and that difference directly impacts performance in practical scenarios.<\/p><table><thead><tr><th>Feature<\/th><th>PDAF (Phase Detection Autofocus)<\/th><th>CDAF (Contrast Detection Autofocus)<\/th><\/tr><\/thead><tbody><tr><td><strong>Focusing Speed<\/strong><\/td><td>Very fast; calculates focus in one movement<\/td><td>Slower; requires iterative adjustments<\/td><\/tr><tr><td><strong>Focusing Accuracy<\/strong><\/td><td>High, especially for initial focus acquisition<\/td><td>Very high when locked, especially in static scenes<\/td><\/tr><tr><td><strong>Focus Stability<\/strong><\/td><td>Stable with minimal visible adjustments<\/td><td>Can exhibit visible \u201cfocus hunting\u201d<\/td><\/tr><tr><td><strong>Motion Tracking<\/strong><\/td><td>Strong performance with moving subjects<\/td><td>Limited; struggles with continuous tracking<\/td><\/tr><tr><td><strong>Low-Light Performance<\/strong><\/td><td>Can degrade if phase signals are weak<\/td><td>Often more reliable due to contrast evaluation<\/td><\/tr><tr><td><strong>System Complexity<\/strong><\/td><td>More complex sensor design<\/td><td>Simpler implementation<\/td><\/tr><tr><td><strong>Cost<\/strong><\/td><td>Typically higher<\/td><td>Generally lower<\/td><\/tr><tr><td><strong>Best Use Cases<\/strong><\/td><td>Live streaming, sports, events, PTZ cameras<\/td><td>Photography, static scenes, controlled environments<\/td><\/tr><\/tbody><\/table><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>The key takeaway isn&#8217;t that one technology is universally better.<\/strong> CDAF&#8217;s precision on static subjects is genuinely useful\u2014in a controlled environment where nothing is moving and lighting is consistent, it locks focus cleanly and accurately. The problem is that PTZ cameras are rarely deployed in those conditions.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The moment a subject moves, a presenter steps closer, or the camera pans to a new position, CDAF&#8217;s fundamental limitation becomes visible: it has to start over every time. PDAF doesn&#8217;t. That difference\u2014between a system that searches and a system that calculates\u2014is what separates cameras that hunt from cameras that simply stay sharp.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">For budget installs and fixed-angle conferencing, <strong>CDAF<\/strong> remains a practical and cost-effective choice.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">For live broadcasting, event production, and any scenario where the camera and subject are both in motion, <strong>PDAF<\/strong> isn&#8217;t a premium feature\u2014it&#8217;s a baseline requirement.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Cameras like the Telycam <a href=\"https:\/\/telycam.com\/explore.html\"><strong>Explore<\/strong><\/a> and <a href=\"https:\/\/telycam.com\/explore-xe.html\"><strong>Explore XE<\/strong><\/a> are built around this principle, bringing PDAF to PTZ workflows where stable, continuous focus matters most.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7a495d7 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"7a495d7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3a81af0 elementor-widget elementor-widget-heading\" data-id=\"3a81af0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b6fc3e elementor-widget elementor-widget-n-accordion\" data-id=\"8b6fc3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;expanded&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1460\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-1460\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What factors affect PDAF accuracy? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1460\" class=\"elementor-element elementor-element-f78c6fa e-con-full e-flex wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"f78c6fa\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0c3c9d8 elementor-widget elementor-widget-text-editor\" data-id=\"0c3c9d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Several variables influence how well PDAF performs:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"whitespace-normal break-words pl-2\"><strong>Aperture (f-number):<\/strong> A wider aperture (smaller f-number) improves PDAF accuracy. The shallower depth of field produces larger circles of confusion when out of focus, which means a more detectable phase shift between the left and right pixel pairs.<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Subject distance:<\/strong> PDAF is more accurate at closer distances. The same amount of defocus produces a larger phase shift when the subject is near the camera, making it easier to calculate the correct lens position.<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Exposure time:<\/strong> Exposure time itself doesn&#8217;t affect PDAF in theory, but extremely short exposures can introduce excessive image noise, which disrupts the accuracy of the phase shift calculation.<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Subject pattern:<\/strong> Subjects with uniform color or repetitive patterns\u2014like a plain wall or a striped shirt\u2014can reduce PDAF reliability. When there&#8217;s no detectable variation in the image, the phase detection pixels have nothing meaningful to compare.<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Subject position in frame:<\/strong> PDAF is most accurate at the center of the frame. Off-axis focus points produce a smaller phase shift for the same degree of defocus, which can reduce precision toward the edges.<\/li><li class=\"whitespace-normal break-words pl-2\"><strong>Subject color:<\/strong> On sensors where phase detection pixels are green-filtered, a subject that is predominantly red or blue may not provide enough light to those pixels, reducing detection reliability.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1461\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1461\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What is focus hunting, and how do I fix it? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1461\" class=\"elementor-element elementor-element-c868a5a e-con-full e-flex wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"c868a5a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-999e355 elementor-widget elementor-widget-text-editor\" data-id=\"999e355\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Focus hunting is the visible back-and-forth oscillation that occurs when a camera&#8217;s autofocus system repeatedly searches for the correct focus position without locking cleanly. It&#8217;s most commonly associated with CDAF, which must sweep through lens positions to find the contrast peak.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">In PTZ cameras, it typically appears after a pan, tilt, or zoom movement, or when the subject has low contrast. Practical fixes include switching to a camera with PDAF or Hybrid AF, narrowing the AF zone to exclude busy backgrounds, or using One-Push AF in stable scenes rather than continuous autofocus.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1462\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1462\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Does PDAF work in complete darkness? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1462\" class=\"elementor-element elementor-element-4206692 e-con-full e-flex wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"4206692\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-37fa55e elementor-widget elementor-widget-text-editor\" data-id=\"37fa55e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>No. PDAF still requires light to function\u2014the phase detection pixels need to receive enough light from both sides of the lens to calculate a meaningful shift. In near-zero light conditions, both PDAF and CDAF will struggle or fail entirely. Most cameras address this with an AF assist beam or by switching to infrared-based focusing in low-light modes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1463\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1463\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is PDAF only for still photography? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1463\" class=\"elementor-element elementor-element-820f68c e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"820f68c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4a6b39f elementor-widget elementor-widget-text-editor\" data-id=\"4a6b39f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Not at all\u2014PDAF is actually better suited to video than CDAF. Because it calculates focus directly without hunting, it maintains smooth, continuous focus during motion, which is exactly what video requires. It&#8217;s the primary reason professional video cameras and high-end PTZ systems have moved toward PDAF and Hybrid AF.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1464\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1464\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Which is better\u2014PDAF or OIS? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1464\" class=\"elementor-element elementor-element-1118a3d e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"1118a3d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4cc7207 elementor-widget elementor-widget-text-editor\" data-id=\"4cc7207\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>They solve different problems and aren&#8217;t directly comparable. PDAF (Phase Detection Autofocus) controls where the lens focuses. OIS (Optical Image Stabilization) compensates for camera shake to keep the image steady. In a PTZ camera, you&#8217;d want both: PDAF for fast, accurate focus, and OIS or electronic stabilization for smooth footage during movement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1465\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1465\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> When was PDAF introduced? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1465\" class=\"elementor-element elementor-element-d988d29 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"d988d29\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d226ad4 elementor-widget elementor-widget-text-editor\" data-id=\"d226ad4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Phase detection autofocus has its roots in film-era SLR cameras from the 1980s, where it was implemented using a separate AF module behind the mirror. On-sensor PDAF\u2014where phase detection pixels are embedded directly into the image sensor\u2014was introduced around 2009 and became widespread in smartphones and mirrorless cameras through the 2010s. It has since become the standard in professional video and PTZ systems.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1466\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"7\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1466\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Does PDAF in smartphones work the same way as in PTZ cameras? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-1466\" class=\"elementor-element elementor-element-98488b1 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"98488b1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d5be091 elementor-widget elementor-widget-text-editor\" data-id=\"d5be091\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The underlying principle is the same\u2014both use phase detection pixel pairs to calculate focus direction and distance. The main differences are in implementation and scale. Smartphone PDAF is optimized for close-range subjects, compact sensors, and fast social media use cases. PTZ camera PDAF is engineered for longer shooting distances, wider zoom ranges, and continuous operation in professional broadcast environments\u2014where the demands on speed, stability, and accuracy are significantly higher.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-73f83ff e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"73f83ff\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8632b6a elementor-widget elementor-widget-heading\" data-id=\"8632b6a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63f6bc3 elementor-widget elementor-widget-text-editor\" data-id=\"63f6bc3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">PDAF and CDAF represent two fundamentally different approaches to autofocus. PDAF determines focus through direct calculation, delivering the speed and stability that dynamic scenes demand. CDAF refines focus through contrast analysis, making it a reliable choice where precision matters more than response time.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">In practice, the right system comes down to how the camera is used. For live streaming, broadcasting, and PTZ applications where fast, continuous focus is critical, PDAF is the clear answer. For controlled, static environments, CDAF remains a capable and cost-effective solution.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">As production workflows move increasingly toward real-time capture, autofocus performance has become one of the most important factors in camera selection\u2014and understanding the difference between these two technologies is the first step to making the right choice.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6ea3a86 e-flex e-con-boxed wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"6ea3a86\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c77880a elementor-widget elementor-widget-heading\" data-id=\"c77880a\" data-element_type=\"widget\" data-e-type=\"widget\" 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https:\/\/telycam.com\/wp-content\/uploads\/2026\/07\/Genlock-Explained-1024x576.jpg 1024w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/07\/Genlock-Explained-768x432.jpg 768w, https:\/\/telycam.com\/wp-content\/uploads\/2026\/07\/Genlock-Explained-1320x742.jpg 1320w\" sizes=\"(max-width: 1366px) 100vw, 1366px\" \/><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<p class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/telycam.com\/genlock-explained-how-multi-camera-synchronization-works-in-traditional-and-ip-based-live-production.html\" >\n\t\t\t\tGenlock Explained: How Multi-Camera Synchronization Works in Traditional and IP-Based Live Production\t\t\t<\/a>\n\t\t<\/p>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/telycam.com\/genlock-explained-how-multi-camera-synchronization-works-in-traditional-and-ip-based-live-production.html\" aria-label=\"Read more about Genlock Explained: How Multi-Camera Synchronization Works in Traditional 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xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" id=\"&#x56FE;&#x5C42;_1\" x=\"0px\" y=\"0px\" viewBox=\"0 0 1578 1444\" style=\"enable-background:new 0 0 1578 1444;\" xml:space=\"preserve\"><g>\t<g>\t\t<path d=\"M1331,137c-6.7,10-15.2,18.5-23,27.6c-50.5,58.8-101,117.5-151.5,176.3c-46.4,53.9-92.8,107.8-139.3,161.8   C974.1,552.8,931,603,887.8,653.1c-2.2,2.5-2,4.3-0.2,6.9c89.5,130.2,178.9,260.4,268.4,390.6c66.5,96.8,133.1,193.6,199.6,290.5   c4.2,6,8.3,12.1,12.5,18.1c1.9,2.8,1.7,4.2-2,4.1c-1.7,0-3.3,0-5,0c-112.7,0-225.3-0.1-338,0.2c-7,0-11.1-2.2-15-7.9   c-32.2-47.4-64.8-94.6-97.2-141.8C837,1106.2,763.1,998.7,689.3,891.1c-2.4-3.4-3.5-3.2-6-0.2c-52.6,61.3-105.4,122.6-158.1,183.8   c-56.4,65.6-112.8,131.1-169.1,196.7c-25.1,29.2-50.2,58.3-75.3,87.6c-2.6,3-5.3,4.4-9.4,4.4c-31.2-0.2-62.3-0.1-93.5-0.1   c-1.6,0-3.8,0.8-4.6-0.8c-0.9-1.8,1.1-2.9,2.2-4.1c32-37.3,64.1-74.5,96.2-111.8c37.5-43.6,74.9-87.2,112.4-130.8   c40.3-46.9,80.6-93.7,121-140.6c35.6-41.4,71.3-82.9,106.9-124.3c7.4-8.6,14.8-17.2,22.2-25.8c5.4-6.3,5.5-6.2,0.9-12.9   C582.5,735.9,530,659.5,477.6,583.1c-76.1-110.8-152.3-221.7-228.4-332.5c-24.5-35.7-49.1-71.4-73.6-107.1c-1.4-2-3.3-3.9-3.5-6.5   c118.7,0,237.3,0,356,0c1.2,1.6,2.5,3.1,3.6,4.8c37.5,54.5,74.9,109,112.4,163.6c63.7,92.7,127.4,185.4,191,278.2   c2.6,3.8,3.8,3.7,6.7,0.3c59.6-69.4,119.3-138.8,178.9-208.1c68.5-79.6,136.9-159.2,205.4-238.7C1261,137,1296,137,1331,137z    M397.1,217c-25.5,0-51,0-76.5,0c-1.4,0-3.3-0.8-4,0.9c-0.5,1.3,0.9,2.4,1.7,3.4c53.2,76.1,106.4,152.1,159.5,228.2   c96,137.4,192.1,274.8,288.1,412.1c98,140.1,195.9,280.2,293.8,420.4c2.5,3.6,5.1,5,9.4,5c50.2-0.1,100.3-0.1,150.5-0.1   c1.6,0,3.8,0.8,4.7-0.7c0.9-1.6-1.1-2.9-2-4.2c-17.3-24.9-34.7-49.7-52.1-74.6c-68.2-97.5-136.4-195-204.5-292.5   c-58.1-83.2-116.3-166.3-174.4-249.5c-62.1-88.8-124.1-177.5-186.2-266.3c-41.2-59-82.5-118-123.7-177c-2.6-3.7-5.4-5.2-9.9-5.1   C446.8,217.1,422,217,397.1,217z\"><\/path>\t<\/g><\/g><\/svg>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<span class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t<a class=\"elementor-icon elementor-social-icon elementor-social-icon-tiktok elementor-animation-rotate elementor-repeater-item-cc67884\" href=\"https:\/\/www.tiktok.com\/@telycamptz?is_from_webapp=1&#038;sender_device=pc\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t<span class=\"elementor-screen-only\">Tiktok<\/span>\n\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-tiktok\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M448,209.91a210.06,210.06,0,0,1-122.77-39.25V349.38A162.55,162.55,0,1,1,185,188.31V278.2a74.62,74.62,0,1,0,52.23,71.18V0l88,0a121.18,121.18,0,0,0,1.86,22.17h0A122.18,122.18,0,0,0,381,102.39a121.43,121.43,0,0,0,67,20.14Z\"><\/path><\/svg>\t\t\t\t\t<\/a>\n\t\t\t\t<\/span>\n\t\t\t\t\t\t\t<span class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t<a class=\"elementor-icon elementor-social-icon elementor-social-icon-instagram elementor-animation-rotate elementor-repeater-item-e487838\" href=\"https:\/\/www.instagram.com\/telycamptz?igsh=MTBxanFqc2Nhc2Mzdw==\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t<span class=\"elementor-screen-only\">Instagram<\/span>\n\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fab-instagram\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M224.1 141c-63.6 0-114.9 51.3-114.9 114.9s51.3 114.9 114.9 114.9S339 319.5 339 255.9 287.7 141 224.1 141zm0 189.6c-41.1 0-74.7-33.5-74.7-74.7s33.5-74.7 74.7-74.7 74.7 33.5 74.7 74.7-33.6 74.7-74.7 74.7zm146.4-194.3c0 14.9-12 26.8-26.8 26.8-14.9 0-26.8-12-26.8-26.8s12-26.8 26.8-26.8 26.8 12 26.8 26.8zm76.1 27.2c-1.7-35.9-9.9-67.7-36.2-93.9-26.2-26.2-58-34.4-93.9-36.2-37-2.1-147.9-2.1-184.9 0-35.8 1.7-67.6 9.9-93.9 36.1s-34.4 58-36.2 93.9c-2.1 37-2.1 147.9 0 184.9 1.7 35.9 9.9 67.7 36.2 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data-id=\"23009ea1\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"New Form\" aria-label=\"New Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"12313\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"23009ea1\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"\" \/>\n\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name*\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-tel elementor-field-group elementor-column elementor-field-group-field_f5f1e1b elementor-col-50\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_f5f1e1b\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tPhone Number\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input size=\"1\" type=\"tel\" name=\"form_fields[field_f5f1e1b]\" id=\"form-field-field_f5f1e1b\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Phone Number\" pattern=\"[0-9()#&amp;+*-=.]+\" title=\"Only numbers and phone characters (#, -, *, etc) are accepted.\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email elementor-col-50 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tEmail Address*\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Email Address*\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-select elementor-field-group elementor-column elementor-field-group-field_d650c92 elementor-col-50\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_d650c92\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tcountry\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field elementor-select-wrapper remove-before \">\n\t\t\t<div class=\"select-caret-down-wrapper\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-caret-down\" viewBox=\"0 0 571.4 571.4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_d650c92]\" id=\"form-field-field_d650c92\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"Country\">Country<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Afghanistan\">Afghanistan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Albania\">Albania<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Algeria\">Algeria<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Andorra\">Andorra<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Angola\">Angola<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Antigua and Barbuda\">Antigua and Barbuda<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Argentina\">Argentina<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Armenia\">Armenia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Australia\">Australia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Austria\">Austria<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Azerbaijan\">Azerbaijan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bahamas\">Bahamas<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bahrain\">Bahrain<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bangladesh\">Bangladesh<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Barbados\">Barbados<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Belarus\">Belarus<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Belgium\">Belgium<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Belize\">Belize<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Benin\">Benin<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bhutan\">Bhutan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bolivia\">Bolivia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bosnia and Herzegovina\">Bosnia and Herzegovina<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Botswana\">Botswana<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Brazil\">Brazil<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Brunei\">Brunei<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Bulgaria\">Bulgaria<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Burkina Faso\">Burkina Faso<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Burundi\">Burundi<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Cabo Verde\">Cabo Verde<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Cambodia\">Cambodia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Cameroon\">Cameroon<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Canada\">Canada<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Central African Republic\">Central African Republic<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Chad\">Chad<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Chile\">Chile<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"China\">China<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Colombia\">Colombia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Comoros\">Comoros<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Congo (Congo-Brazzaville)\">Congo (Congo-Brazzaville)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Costa Rica\">Costa Rica<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Croatia\">Croatia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Cuba\">Cuba<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Cyprus\">Cyprus<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Czech Republic\">Czech Republic<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Denmark\">Denmark<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Djibouti\">Djibouti<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Dominica\">Dominica<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Dominican Republic\">Dominican Republic<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Ecuador\">Ecuador<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Egypt\">Egypt<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"El Salvador\">El Salvador<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Equatorial Guinea\">Equatorial Guinea<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Eritrea\">Eritrea<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Estonia\">Estonia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Eswatini\">Eswatini<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Ethiopia\">Ethiopia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Fiji\">Fiji<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Finland\">Finland<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"France\">France<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Gabon\">Gabon<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Gambia\">Gambia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Georgia\">Georgia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Germany\">Germany<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Ghana\">Ghana<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Greece\">Greece<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Grenada\">Grenada<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Guatemala\">Guatemala<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Guinea\">Guinea<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Guinea-Bissau\">Guinea-Bissau<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Guyana\">Guyana<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Haiti\">Haiti<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Honduras\">Honduras<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Hungary\">Hungary<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Iceland\">Iceland<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"India\">India<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Indonesia\">Indonesia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Iran\">Iran<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Iraq\">Iraq<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Ireland\">Ireland<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Israel\">Israel<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Italy\">Italy<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Jamaica\">Jamaica<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Japan\">Japan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Jordan\">Jordan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Kazakhstan\">Kazakhstan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Kenya\">Kenya<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Kiribati\">Kiribati<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Kuwait\">Kuwait<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Kyrgyzstan\">Kyrgyzstan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Laos\">Laos<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Latvia\">Latvia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Lebanon\">Lebanon<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Lesotho\">Lesotho<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Liberia\">Liberia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Libya\">Libya<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Liechtenstein\">Liechtenstein<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Lithuania\">Lithuania<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Luxembourg\">Luxembourg<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Madagascar\">Madagascar<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Malawi\">Malawi<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Malaysia\">Malaysia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Maldives\">Maldives<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Mali\">Mali<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Malta\">Malta<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Marshall Islands\">Marshall Islands<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Mauritania\">Mauritania<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Mauritius\">Mauritius<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Mexico\">Mexico<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Micronesia\">Micronesia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Moldova\">Moldova<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Monaco\">Monaco<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Mongolia\">Mongolia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Montenegro\">Montenegro<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Morocco\">Morocco<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Mozambique\">Mozambique<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Myanmar (Burma)\">Myanmar (Burma)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Namibia\">Namibia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Nauru\">Nauru<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Nepal\">Nepal<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Netherlands\">Netherlands<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"New Zealand\">New Zealand<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Nicaragua\">Nicaragua<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Niger\">Niger<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Nigeria\">Nigeria<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"North Korea\">North Korea<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"North Macedonia\">North Macedonia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Norway\">Norway<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Oman\">Oman<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Pakistan\">Pakistan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Palau\">Palau<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Palestine\">Palestine<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Panama\">Panama<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Papua New Guinea\">Papua New Guinea<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Paraguay\">Paraguay<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Peru\">Peru<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Philippines\">Philippines<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Poland\">Poland<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Portugal\">Portugal<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Qatar\">Qatar<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Romania\">Romania<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Russia\">Russia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Rwanda\">Rwanda<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Saint Kitts and Nevis\">Saint Kitts and Nevis<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Saint Lucia\">Saint Lucia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Saint Vincent and the Grenadines\">Saint Vincent and the Grenadines<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Samoa\">Samoa<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"San Marino\">San Marino<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Sao Tome and Principe\">Sao Tome and Principe<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Saudi Arabia\">Saudi Arabia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Senegal\">Senegal<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Serbia\">Serbia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Seychelles\">Seychelles<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Sierra Leone\">Sierra Leone<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Singapore\">Singapore<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Slovakia\">Slovakia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Slovenia\">Slovenia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Solomon Islands\">Solomon Islands<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Somalia\">Somalia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"South Africa\">South Africa<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"South Korea\">South Korea<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"South Sudan\">South Sudan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Spain\">Spain<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Sri Lanka\">Sri Lanka<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Sudan\">Sudan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Suriname\">Suriname<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Sweden\">Sweden<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Switzerland\">Switzerland<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Syria\">Syria<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Tajikistan\">Tajikistan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Tanzania\">Tanzania<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Thailand\">Thailand<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Timor-Leste\">Timor-Leste<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Togo\">Togo<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Tonga\">Tonga<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Trinidad and Tobago\">Trinidad and Tobago<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Tunisia\">Tunisia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Turkey\">Turkey<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Turkmenistan\">Turkmenistan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Tuvalu\">Tuvalu<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Uganda\">Uganda<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Ukraine\">Ukraine<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"United Arab Emirates\">United Arab Emirates<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"United Kingdom\">United Kingdom<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"United States\">United States<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Uruguay\">Uruguay<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Uzbekistan\">Uzbekistan<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Vanuatu\">Vanuatu<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Vatican City\">Vatican City<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Venezuela\">Venezuela<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Vietnam\">Vietnam<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Yemen\">Yemen<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Zambia\">Zambia<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Zimbabwe\">Zimbabwe<\/option>\n\t\t\t\t\t\t\t<\/select>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Tell us how we can help* \" required=\"required\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-recaptcha elementor-field-group elementor-column elementor-field-group-field_8d88fd8 elementor-col-100\">\n\t\t\t\t\t<div class=\"elementor-field\" id=\"form-field-field_8d88fd8\"><div class=\"elementor-g-recaptcha\" data-sitekey=\"6Le9EkoqAAAAADB3N4MaOe4GGqjL20GjrTRdvyU1\" data-type=\"v2_checkbox\" data-theme=\"light\" data-size=\"normal\"><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-md elementor-animation-shrink\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>PDAF vs. CDAF in PTZ Cameras: Which Autofocus Technology Delivers Better Results? In live production, focus stability directly affects how audiences perceive content quality. When a PTZ camera hunts back and forth mid-shot\u2014a problem known as focus hunting\u2014the result is blurry footage that no post-production can restore. The root cause comes down to autofocus technology. There are two approaches used in modern PTZ cameras: CDAF (Contrast Detection Autofocus) finds focus through trial and error, while PDAF (Phase Detection Autofocus) calculates the focal point directly in a single step. This guide breaks down how each works\u2014and why professional PTZ production is increasingly moving toward PDAF. Table of Contents How Autofocus Works in PTZ Cameras? PTZ camera autofocus has one fundamental job: move the lens to the exact position where light from the subject converges precisely on the image sensor. Every autofocus system must answer two questions\u2014which direction should the lens move, and how far? How different technologies answer these questions determines everything about focus speed, stability, and reliability. For standard cameras, this is a manageable problem. For PTZ cameras, it&#8217;s a significantly harder one. Extreme zoom ranges compress your margin for error. At wide angle, a lens might cover a depth of field of several meters. At full telephoto on a 30x PTZ, that same lens may have a depth of field measured in centimeters\u2014where even the smallest focus error becomes immediately visible. Long shooting distances introduce real-world interference. PTZ cameras routinely target subjects 50 to 200 meters away, where atmospheric conditions like heat shimmer and low ambient light degrade the image contrast that autofocus systems depend on. Rapid movement leaves no time to re-acquire focus. Pan, tilt, and zoom transitions can shift the focal distance dramatically within seconds. In live production, the autofocus system must maintain lock throughout continuous motion\u2014not just after the camera stops. Professional PTZ deployment adds further requirements. Continuous Autofocus (CAF), AI-based subject tracking, and focus stability through zoom transitions are all expected in modern PTZ workflows\u2014capabilities that go well beyond what standard autofocus architectures were built to deliver. These demands explain why the autofocus technology inside a PTZ camera matters more than in almost any other camera category\u2014and why the industry is actively moving away from older approaches. What Is Contrast Detection Autofocus(CDAF)? Contrast Detection Autofocus (CDAF) is the oldest and most widely used autofocus method in cameras today. To understand how it works, it helps to start with something familiar: your own eyes. Human vision is itself contrast-based. When you look at an object, your brain continuously evaluates the sharpness of what you&#8217;re seeing and adjusts the lens of your eye\u2014the crystalline lens\u2014until contrast is maximized. You don&#8217;t consciously think about this; it simply happens. CDAF works on the same principle, except the camera&#8217;s image sensor plays the role of your eye, and a motor drives the lens. How CDAF Actually Works The underlying logic is straightforward. When a lens is out of focus, each point of light from the subject spreads into a small disk on the sensor\u2014called a circle of confusion. Overlapping discs cause adjacent pixels to blur together, pulling contrast down. When focus is correct, those discs collapse back into sharp points, edges become crisp, and contrast peaks. \u00a0 *Diagram showing circles of confusion for point source too close, in focus, and too far To find that peak, the camera isolates a zone within the frame\u2014the AF comparison range\u2014and drives the lens through positions one by one, calculating a contrast value at each step. Think of it like slowly turning a radio dial: the signal gets stronger as you approach the right frequency, and you stop when it&#8217;s clearest. The camera does the same, locking focus when the contrast value hits its maximum. The catch is that the camera can only identify the peak after passing through it. Every time the scene changes, the sweep restarts from scratch, the lens overshoots, then drives back\u2014producing the back-and-forth oscillation viewers see on screen, commonly known as focus hunting. What Is Phase Detection Autofocus(PDAF)? Interestingly, Phase Detection Autofocus (PDAF) also has a connection to human vision\u2014but a different one. Rather than mimicking how the eye adjusts focus, it mirrors how the brain determines distance. Because your two eyes are positioned slightly apart, each captures the world from a marginally different angle. Your brain compares these two slightly offset images and uses the difference\u2014the parallax\u2014to calculate how far away an object is. This is why closing one eye makes depth perception noticeably harder. PDAF applies exactly this logic to autofocus. Binocular parallax diagram How PDAF Works Instead of searching back and forth to find the sharpest image, PDAF determines focus in a more direct and calculated way. Inside the image sensor, there are specially designed pixel pairs\u2014often referred to as phase detection pixels. These pixels are partially masked so that each one receives light from only one side of the lens, either left or right. As a result, the camera effectively captures two slightly different versions of the same scene at the same time. When the image is out of focus, these two versions do not perfectly align. By analyzing how far they are offset\u2014and in which direction\u2014the camera can instantly determine: The direction the lens needs to move The exact distance required to achieve focus This allows the lens to move directly to the correct position in a single step, rather than relying on repeated adjustments. You can think of it like a rangefinder. Instead of moving step by step to \u201cfind\u201d the correct distance, you measure it once and go straight to the answer. Because of this, PDAF is able to achieve focus quickly and with high consistency, making it particularly well-suited for real-time applications such as live streaming, broadcasting, and event capture. \u00a0 *PDAF performance demonstration video https:\/\/telycam.com\/wp-content\/uploads\/2024\/09\/PDAF.webm PDAF vs. CDAF \u2014 Head-to-Head After understanding how both autofocus systems work, the next logical question is simple:How do PDAF and CDAF actually compare in real-world use? While both technologies are capable of achieving<\/p>\n","protected":false},"author":1,"featured_media":12314,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-12313","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/posts\/12313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/comments?post=12313"}],"version-history":[{"count":55,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/posts\/12313\/revisions"}],"predecessor-version":[{"id":12419,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/posts\/12313\/revisions\/12419"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/media\/12314"}],"wp:attachment":[{"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/media?parent=12313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/categories?post=12313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/telycam.com\/wp-json\/wp\/v2\/tags?post=12313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}