{"id":5497,"date":"2010-05-06T04:34:24","date_gmt":"2010-05-06T02:34:24","guid":{"rendered":"http:\/\/ylovephoto.com\/en\/?p=5497"},"modified":"2010-03-20T17:12:49","modified_gmt":"2010-03-20T15:12:49","slug":"clean-hot-pixels-from-raw-files","status":"publish","type":"post","link":"https:\/\/www.ylovephoto.com\/en\/2010\/05\/06\/clean-hot-pixels-from-raw-files\/","title":{"rendered":"Clean hot pixels from RAW files"},"content":{"rendered":"<p>It is sometimes unpleasant to discover a little annoying problem like a <a href=\"http:\/\/en.wikipedia.org\/wiki\/Defective_pixel\">defective pixel<\/a> on the sensor of a digital photo camera. It produces a small colored pixel (often black or white, sometimes of some other color). On a RAW file, it could be worse if it produces a colored streak.<\/p>\n<p>It is most visible when shooting long exposures and the strategy used by most photo cameras is simply to shoot an additional black picture(without opening the shutter) just after the photo you wanted to find the hot pixels and remove\/subtract them from the original photo. This is observable as a relatively long computation after a long exposure photo.<\/p>\n<div align=center style=\"margin-top:15px\"\">\n    <img decoding=\"async\" style=\"width: 343px; height: 325px;\" border=2 alt=\"Example of hot strip removal\" title=\"Example of hot strip removal\" src=\"http:\/\/www.pixelfixer.org\/HotStripBeforeAfter.jpg\"><\/p>\n<div class=\"footnote\">Sample kindly provided by <a href=\"http:\/\/www.projectet.com\" target=\"_blank\">Dan Thorberg<\/a>.\n        <\/div>\n<\/p><\/div>\n<p>It takes time in the field and it uses up the camera electrical energy. So, here is a small tool that allow to transfer this operation toward the studio PC: <a href=\"http:\/\/www.pixelfixer.org\/\">PixelFixer<\/a>.<\/p>\n<p>The list of photo cameras this tool is compatible with contains a lot of cameras from Nikon, Canon, Pentax and Leica. No Sony I know of (they are left with the in-camera option that works well too).<\/p>\n<p><a href=\"http:\/\/www.pixelfixer.org\/download.html\">T\u00e9l\u00e9chargement gratuit de PixelFixer<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>It is sometimes unpleasant to discover a little annoying problem like a defective pixel on the sensor of a digital photo camera. It produces a small colored pixel (often black or white, sometimes of some other color). On a RAW file, it could be worse if it produces a colored streak. It is most visible [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7450,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,49],"tags":[103,255,142],"class_list":["post-5497","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-edit","category-technology","tag-download","tag-pixel","tag-windows"],"_links":{"self":[{"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/posts\/5497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/comments?post=5497"}],"version-history":[{"count":0,"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/posts\/5497\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/media\/7450"}],"wp:attachment":[{"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/media?parent=5497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/categories?post=5497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ylovephoto.com\/en\/wp-json\/wp\/v2\/tags?post=5497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}