{"id":2489,"date":"2020-01-16T13:47:49","date_gmt":"2020-01-16T13:47:49","guid":{"rendered":"https:\/\/www.nachleben.org.uk\/skomer\/?p=2489"},"modified":"2021-09-03T18:52:48","modified_gmt":"2021-09-03T18:52:48","slug":"3-bladed-shutter","status":"publish","type":"post","link":"https:\/\/www.nachleben.org.uk\/skomer\/?p=2489","title":{"rendered":"3 bladed shutter"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>What does a 3 bladed shutter do differently from a 2?<\/p>\n<p>Nothing apart from project each frame 3 times, producing an image flicker frequency of 72hz.<\/p>\n<p>A 2 bladed shutter produces 48hz.<\/p>\n<p>If we chop off one of the blades in a 2 bladed shutter (not the pulldown mask obviously, unless we want this effect) we will get 24hz, representative of 24fps image acquisition rate.<\/p>\n<p>To Come&#8230;..<\/p>\n<p>next im going to measure the angles to see if its a 3:2 light\/dark ratio.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-2490\" src=\"https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed.jpg\" alt=\"\" width=\"2048\" height=\"1152\" srcset=\"https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed.jpg 2048w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed-300x169.jpg 300w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed-1024x576.jpg 1024w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed-768x432.jpg 768w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed-1536x864.jpg 1536w, https:\/\/www.nachleben.org.uk\/skomer\/wp-content\/uploads\/2020\/01\/three-bladed-125x70.jpg 125w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; What does a 3 bladed shutter do differently from a 2? Nothing apart from project each frame 3 times, producing an image flicker frequency of 72hz. A 2 bladed shutter produces 48hz. If we chop off one of the blades in a 2 bladed shutter (not the pulldown mask obviously, unless we want this effect) we will get 24hz, &hellip;<\/p>\n","protected":false},"author":1,"featured_media":2490,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19,27],"tags":[],"class_list":["post-2489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lab-activity","category-shutters","archive-loop-container"],"_links":{"self":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts\/2489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2489"}],"version-history":[{"count":5,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts\/2489\/revisions"}],"predecessor-version":[{"id":2495,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/posts\/2489\/revisions\/2495"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=\/wp\/v2\/media\/2490"}],"wp:attachment":[{"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nachleben.org.uk\/skomer\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}