{"id":18786,"date":"2013-11-17T13:27:35","date_gmt":"2013-11-17T11:27:35","guid":{"rendered":"https:\/\/mamchenkov.net\/wordpress\/?p=18786"},"modified":"2013-11-17T13:27:35","modified_gmt":"2013-11-17T11:27:35","slug":"how-much-dirty-lens-affects-image-quality","status":"publish","type":"post","link":"https:\/\/mamchenkov.net\/wordpress\/2013\/11\/17\/how-much-dirty-lens-affects-image-quality\/","title":{"rendered":"How much dirty lens affects image quality"},"content":{"rendered":"<!-- google_ad_section_start -->\n<p>The photographer Kurt Munger ran <a href=\"http:\/\/kurtmunger.com\/dirty_lens_articleid35.html\">an experiment<\/a> on how much dust, scratches and damages of the lens affect image quality. \u00a0The results are very counterintuitive. \u00a0At least for me. \u00a0Fingerprints, dust, scratches, and even bits of non-transparent duct tape have no effect what-so-ever. \u00a0The first signs of something going wrong appear with very serious lens damage, like this:<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"18787\" data-permalink=\"https:\/\/mamchenkov.net\/wordpress\/2013\/11\/17\/how-much-dirty-lens-affects-image-quality\/broken-lens\/\" data-orig-file=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?fit=600%2C578&amp;ssl=1\" data-orig-size=\"600,578\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;2.8&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;DMC-FX100&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1239229184&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;6&quot;,&quot;iso&quot;:&quot;80&quot;,&quot;shutter_speed&quot;:&quot;0.04&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"broken lens\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?fit=600%2C578&amp;ssl=1\" class=\"aligncenter size-medium wp-image-18787\" alt=\"broken lens\" src=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens-500x481.jpg?resize=500%2C481&#038;ssl=1\" width=\"500\" height=\"481\" srcset=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?resize=500%2C481&amp;ssl=1 500w, https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?resize=510%2C491&amp;ssl=1 510w, https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?resize=492%2C474&amp;ssl=1 492w, https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/broken-lens.jpg?w=600&amp;ssl=1 600w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>Even then, the image is not as bad as you&#8217;d expect. \u00a0Here it is.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image.jpg?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"18788\" data-permalink=\"https:\/\/mamchenkov.net\/wordpress\/2013\/11\/17\/how-much-dirty-lens-affects-image-quality\/sony-dsc\/\" data-orig-file=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image.jpg?fit=600%2C400&amp;ssl=1\" data-orig-size=\"600,400\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;5.6&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;DSLR-A900&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;1239272357&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;28&quot;,&quot;iso&quot;:&quot;200&quot;,&quot;shutter_speed&quot;:&quot;0.0008&quot;,&quot;title&quot;:&quot;SONY DSC&quot;}\" data-image-title=\"SONY DSC\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image.jpg?fit=600%2C400&amp;ssl=1\" class=\"aligncenter size-medium wp-image-18788\" alt=\"SONY DSC\" src=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image-500x333.jpg?resize=500%2C333&#038;ssl=1\" width=\"500\" height=\"333\" srcset=\"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image.jpg?resize=500%2C333&amp;ssl=1 500w, https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image.jpg?resize=510%2C340&amp;ssl=1 510w, https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2013\/11\/spotty-image.jpg?w=600&amp;ssl=1 600w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>Read <a href=\"http:\/\/kurtmunger.com\/dirty_lens_articleid35.html\">the whole thing<\/a> for more details.<\/p>\n<!-- google_ad_section_end -->\n","protected":false},"excerpt":{"rendered":"<!-- google_ad_section_start -->\n<p>The photographer Kurt Munger ran an experiment on how much dust, scratches and damages of the lens affect image quality. \u00a0The results are very counterintuitive. \u00a0At least for me. \u00a0Fingerprints, dust, scratches, and even bits of non-transparent duct tape have no effect what-so-ever. \u00a0The first signs of something going wrong appear with very serious lens &hellip; <a href=\"https:\/\/mamchenkov.net\/wordpress\/2013\/11\/17\/how-much-dirty-lens-affects-image-quality\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">How much dirty lens affects image quality<\/span><\/a><\/p>\n<!-- google_ad_section_end -->\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_links_to":"","_links_to_target":""},"categories":[1,30],"tags":[357,1115,9,3229],"keyring_services":[],"class_list":["post-18786","post","type-post","status-publish","format-standard","hentry","category-general","category-photography","tag-equipment","tag-experiments","tag-hardware","tag-kurt-munger"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":7495,"url":"https:\/\/mamchenkov.net\/wordpress\/2004\/05\/10\/the-lens-is-here\/","url_meta":{"origin":18786,"position":0},"title":"The lens is here!!!","author":"Leonid Mamchenkov","date":"May 10, 2004","format":false,"excerpt":"Finally, after waiting for almost a month my order had arrived. It has been through all possible problems. At first, there was a long timeout until Digital Photo Club realised that they are out of stock and that they need to backorder the circular polarizer. Somehow we managed to substitute\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":8943,"url":"https:\/\/mamchenkov.net\/wordpress\/2005\/05\/07\/konsole-is-faster-than-xterm\/","url_meta":{"origin":18786,"position":1},"title":"konsole is faster than xterm","author":"Leonid Mamchenkov","date":"May 7, 2005","format":false,"excerpt":"I was scrolling through Planet KDE when I saw this post by Kurt Pfeifle. He was saying exactly this: So we were both very surprised. to see konsole not only being close to xterm\u00e2\u20ac\u2122s performance, but being more than double as efficient! Since I hear a lot of people praising\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7682,"url":"https:\/\/mamchenkov.net\/wordpress\/2004\/07\/17\/show-laces-and-knots\/","url_meta":{"origin":18786,"position":2},"title":"Show laces and knots","author":"Leonid Mamchenkov","date":"July 17, 2004","format":false,"excerpt":"How many ways do think there to lace your shoes? I thought thre were about 3: one way is like they do it in the shop, which you can see when you buy new shoes; another is like I do it - left over right, right over left, left over\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7412,"url":"https:\/\/mamchenkov.net\/wordpress\/2004\/04\/05\/signs\/","url_meta":{"origin":18786,"position":3},"title":"Signs","author":"Leonid Mamchenkov","date":"April 5, 2004","format":false,"excerpt":"Watched \"Signs\" on DVD. It's the second time I see and it's the second time I don't like it. It has some nice bits and it's funny at times, but overall the movie is boring and does not deliver. The whole movie is spent in preparations for the aliens to\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":9268,"url":"https:\/\/mamchenkov.net\/wordpress\/2005\/07\/25\/the-fan\/","url_meta":{"origin":18786,"position":4},"title":"The Fan","author":"Leonid Mamchenkov","date":"July 25, 2005","format":false,"excerpt":"With all the heat that we are having here in Cyprus, anything that sounds like a chill out sounds like a really good thing. I know that \"The Fan\" could have several meanings but I picked it up anyway. Directed by: Tony Scott Genres: Thriller Cast: Robert De Niro, Wesley\u2026","rel":"","context":"In &quot;3 stars&quot;","block_context":{"text":"3 stars","link":"https:\/\/mamchenkov.net\/wordpress\/category\/movies\/movie-reviews\/3-stars\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/mamchenkov.net\/wordpress\/wp-content\/uploads\/2005\/07\/the_fan.jpg?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":10732,"url":"https:\/\/mamchenkov.net\/wordpress\/2007\/06\/19\/daily-tweets\/","url_meta":{"origin":18786,"position":5},"title":"Daily tweets","author":"Leonid Mamchenkov","date":"June 19, 2007","format":false,"excerpt":"Transparent terminal backgrounds look so cool. But for some reason I am much more productive with solid black. Yes. Bright white on black. # I'm really pleased with popularity of my new WordPress bits blog. I wonder if that is because of content or WordPress.com crowd. http:\/\/wpbi # Snap thing\u2026","rel":"","context":"In &quot;All&quot;","block_context":{"text":"All","link":"https:\/\/mamchenkov.net\/wordpress\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/posts\/18786","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/comments?post=18786"}],"version-history":[{"count":0,"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/posts\/18786\/revisions"}],"wp:attachment":[{"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/media?parent=18786"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/categories?post=18786"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/tags?post=18786"},{"taxonomy":"keyring_services","embeddable":true,"href":"https:\/\/mamchenkov.net\/wordpress\/wp-json\/wp\/v2\/keyring_services?post=18786"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}