{"id":626,"date":"2022-07-30T10:24:57","date_gmt":"2022-07-30T10:24:57","guid":{"rendered":"http:\/\/bechele.de\/?p=626"},"modified":"2022-09-23T13:36:28","modified_gmt":"2022-09-23T13:36:28","slug":"camera-focussing","status":"publish","type":"page","link":"https:\/\/bechele.de\/?page_id=626","title":{"rendered":"Camera focussing"},"content":{"rendered":"\n<p class=\"has-medium-font-size\"><strong>How to focus a notebook camera<\/strong><\/p>\n\n\n\n<p>Notebook cameras are usually focused for a distance of about 50cm so they are sharp for video phone calls. On a surveillance cam you may like to focus for a bigger distance. Because the lenses are very small and the focus depht is quite big, focussing is not necessarily required. However, to get an optimized focus an adjustment leads to a better image.<\/p>\n\n\n\n<p>The lenses, as small as they are have almost a focus adjustment thread, but this is usually fixed with glue. You may often loosen the glue by turning the lens counter-clock-wise. However I had also cameras, where the lense holder ripped completely off. To loosen the almost as a crown shaped lens holder you need actually a special tool. With pliers you probably destroy the camera.<\/p>\n\n\n\n<p>The following procedure helped me to create a simple tool to remove the lens:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Put a very small piece of paper into the lens opening for protection.<\/li><li>Heat up a proper piece of plastic on one side until it becomes viscous on the surface.<\/li><li>Push the molten material onto the lens and let it cool down. Now it has the form of the crown.<\/li><li>With the cold tool remove the lens first completely and remove the glue rests from the lens thread.<\/li><li>Now screw the lens in again and focus accordingly.<\/li><\/ol>\n\n\n\n<p>To set the focus to a longer distance you need to turn in the lens closer to the sensor. If you try to turn in the lens first, you take a high risk to rip off the sensor housing. Therefore first turn left &#8211; clean and then turn right. A fixing of the lens with gue is not required (from my point of view). It holds also without !?<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/bechele.de\/wp-content\/uploads\/2022\/07\/115-1.jpg\" alt=\"Lens\"\/><figcaption>Camera lens with visible focus thread<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/bechele.de\/wp-content\/uploads\/2022\/07\/115-2.jpg\" alt=\"Lens Wrench\"\/><figcaption>Self made plastic key<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>How to focus a notebook camera Notebook cameras are usually focused for a distance of about 50cm so they are sharp for video phone calls.&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":617,"menu_order":3,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-626","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/pages\/626","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/bechele.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=626"}],"version-history":[{"count":3,"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/pages\/626\/revisions"}],"predecessor-version":[{"id":647,"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/pages\/626\/revisions\/647"}],"up":[{"embeddable":true,"href":"https:\/\/bechele.de\/index.php?rest_route=\/wp\/v2\/pages\/617"}],"wp:attachment":[{"href":"https:\/\/bechele.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}