{"id":2057,"date":"2010-06-30T22:29:38","date_gmt":"2010-06-30T12:29:38","guid":{"rendered":"http:\/\/www.flamingspork.com\/blog\/?p=2057"},"modified":"2010-06-30T22:29:38","modified_gmt":"2010-06-30T12:29:38","slug":"reciprocity-failure","status":"publish","type":"post","link":"https:\/\/www.flamingspork.com\/blog\/2010\/06\/30\/reciprocity-failure\/","title":{"rendered":"Reciprocity failure"},"content":{"rendered":"

“As the light level decreases out of the reciprocity range, the increase in duration, and hence of total exposure, required to produce an equivalent response becomes higher than the formula states<\/em>” (see Wikipedia entry<\/a>).<\/p>\n

Those of us coming from having shot a lot of digital, especially when you’re experience of low light photography is entirely with digital are going to get a bit of a shock at some point. Why didn’t this image work exactly as I wanted it to? Why isn’t there as much.. well.. image!<\/p>\n

You’ll probably read things like “you don’t need to worry about it until you’re into really long exposures” or maybe you’ll start reading the manufacturers documents on the properties of the film and just go “whatever”.<\/p>\n

Ilford Delta 3200 Professional is one of the films where you have to start caring about it pretty quickly. Basically, you need to overexpose once you start getting exposures greater than ~1second.<\/p>\n

In decent light, handheld with a pretty quick exposure, things look great:<\/p>\n

\"leah\"<\/a><\/p>\n

But whack things on a Tripod and have a bit of a longer exposure you’re going to start failing a bit. Even though I like this shot, I find that it’s just not quite got everything I would have liked to capture. Just exposing a bit more I think would have done it. I had to do too much in scanning and the GIMP…<\/p>\n

\"under<\/a><\/p>\n

So I learnt something with this roll, which is always good.<\/p>\n","protected":false},"excerpt":{"rendered":"

“As the light level decreases out of the reciprocity range, the increase in duration, and hence of total exposure, required to produce an equivalent response becomes higher than the formula states” (see Wikipedia entry). Those of us coming from having … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[16],"tags":[329,175,174,200,328],"class_list":["post-2057","post","type-post","status-publish","format-standard","hentry","category-photos","tag-exposure","tag-film","tag-ilford","tag-photography","tag-recipriocity"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5a6n8-xb","jetpack-related-posts":[{"id":1688,"url":"https:\/\/www.flamingspork.com\/blog\/2009\/08\/04\/experimenting-with-ilford-delta-asa-3200-bw-film\/","url_meta":{"origin":2057,"position":0},"title":"Experimenting with Ilford Delta ASA 3200 B&W Film","author":"Stewart Smith","date":"2009-08-04","format":false,"excerpt":"So it has been a long time since I've shot film... and it pretty much was always colour. Part of this was in prep for Burning Man. i.e. how to take a photo in the dark (and part was \"hey, what cool tricks can I do\"). Reading up on film,\u2026","rel":"","context":"In "cool gadgets"","block_context":{"text":"cool gadgets","link":"https:\/\/www.flamingspork.com\/blog\/category\/cool-gadgets\/"},"img":{"alt_text":"Rrose drink","src":"https:\/\/i0.wp.com\/www.flamingspork.com\/blog\/wp-content\/uploads\/2009\/08\/F1000023-300x200.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2049,"url":"https:\/\/www.flamingspork.com\/blog\/2010\/06\/29\/more-film-developing\/","url_meta":{"origin":2057,"position":1},"title":"More film developing","author":"Stewart Smith","date":"2010-06-29","format":false,"excerpt":"I've developed some more film! Here's some shots from last time I was in Hobart. All shot on Ilford HP5+, which I quite like. I'm still getting used to this developing thing and next time should be much better! The HP5+ was shot at the box speed of 400 with\u2026","rel":"","context":"In "Photos"","block_context":{"text":"Photos","link":"https:\/\/www.flamingspork.com\/blog\/category\/photos\/"},"img":{"alt_text":"Buskers at Salamanca","src":"https:\/\/i0.wp.com\/farm5.static.flickr.com\/4021\/4704797839_39b7527768.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2203,"url":"https:\/\/www.flamingspork.com\/blog\/2010\/11\/20\/making-my-own-bw-prints\/","url_meta":{"origin":2057,"position":2},"title":"Making my own B&W Prints","author":"Stewart Smith","date":"2010-11-20","format":false,"excerpt":"I managed to light seal the Laundry (not pretty... but it worked) and started playing with one of the enlargers I bought recently. I had a bit of an inkling from some reading I did ages ago about what I had to do to make prints. I didn't really have\u2026","rel":"","context":"In "Photos"","block_context":{"text":"Photos","link":"https:\/\/www.flamingspork.com\/blog\/category\/photos\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2216,"url":"https:\/\/www.flamingspork.com\/blog\/2010\/12\/02\/the-camera-never-lies\/","url_meta":{"origin":2057,"position":3},"title":"The camera never lies","author":"Stewart Smith","date":"2010-12-02","format":false,"excerpt":"Of course it does! We have The GIMP and Photoshop! Well... Back in the day, when everybody shot film, things were a bit more difficult. For a lot of operations it was pretty easy: select the right film, right exposure. For control you could vary how you developed it and\u2026","rel":"","context":"In "Photos"","block_context":{"text":"Photos","link":"https:\/\/www.flamingspork.com\/blog\/category\/photos\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1799,"url":"https:\/\/www.flamingspork.com\/blog\/2010\/02\/22\/first-roll-through-the-nikon-f80\/","url_meta":{"origin":2057,"position":4},"title":"First roll through the Nikon F80","author":"Stewart Smith","date":"2010-02-22","format":false,"excerpt":"A little while ago I bit the bullet and bought a Nikon film body - a F80. May as well have a film body that's a bit automatic and takes the same lens mount as my digital. So, I got it and thought \"hrrm... I better run a roll of\u2026","rel":"","context":"In "General"","block_context":{"text":"General","link":"https:\/\/www.flamingspork.com\/blog\/category\/general\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.flamingspork.com\/blog\/wp-content\/uploads\/2010\/02\/f1000004-682x1024.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1815,"url":"https:\/\/www.flamingspork.com\/blog\/2010\/02\/28\/playing-with-multiple-exposure\/","url_meta":{"origin":2057,"position":5},"title":"Playing with multiple exposure","author":"Stewart Smith","date":"2010-02-28","format":false,"excerpt":"So, I discovered that my D200 had a built in \"multiple exposure\" option. While you can do exactly the same thing in GIMP (or Photoshop I guess) a whole lot easier (for one, you get to see what's gonig on), we had been discussing Holga earlier in the night... so\u2026","rel":"","context":"In "General"","block_context":{"text":"General","link":"https:\/\/www.flamingspork.com\/blog\/category\/general\/"},"img":{"alt_text":"Guitar Hero","src":"https:\/\/i0.wp.com\/farm5.static.flickr.com\/4001\/4392721955_ef696ffee1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts\/2057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/comments?post=2057"}],"version-history":[{"count":2,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts\/2057\/revisions"}],"predecessor-version":[{"id":2059,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/posts\/2057\/revisions\/2059"}],"wp:attachment":[{"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/media?parent=2057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/categories?post=2057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.flamingspork.com\/blog\/wp-json\/wp\/v2\/tags?post=2057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}