jon w. Posted December 22, 2003 Share Posted December 22, 2003 Hello everyone,Polaroid's data sheets give only (very rough) reciprocity failurecorrections in terms of aperture adjustment. Like most photographers,I prefer to work with a constant aperture, and adjust exposure anddevelopment times. I tried asking Polaroid about this, but was metwith blank silence.I wonder if anyone has adjustment times for Polaroid Type 52, which Ishall be using for proofing night-time shooting, at indicatedexposures out to 2 and 4 minutes? If so, I'd be very grateful. I triedsearching the PN archive, but only found data for Type 55. Therelevant info. may be in Adams' 'Polaroid Land Photography', I guess,but I can't find a copy. Link to comment Share on other sites More sharing options...
pvp Posted December 22, 2003 Share Posted December 22, 2003 It's right there in the datasheet on Polaroid's site: http://www.polaroid.com/service/filmdatasheets/4_5/52fds.pdf Link to comment Share on other sites More sharing options...
silent1 Posted December 22, 2003 Share Posted December 22, 2003 I just looked at the referenced data sheet; there's lots of information on how to correct for temperature, but I don't see anything related to reiprocity failure. I did, however, receive an error message; it's possible that document contains information Acrobat Reader 5 can't interpret... Link to comment Share on other sites More sharing options...
dave schlick Posted December 22, 2003 Share Posted December 22, 2003 from my experience in the past, polaroid film wont work properly on extended exosures.. i wont go over about an 1/8 second. but your meter should calculat the differnce, change asa,... so you can shoot at quick time and change exposure to what you want for regualar film.. the real loss is depth of field differences.. .. good luck.. dave Link to comment Share on other sites More sharing options...
jon w. Posted December 22, 2003 Author Share Posted December 22, 2003 As I said, the data sheet only gives adjustments in terms of increase in aperture, not in terms of exposure times. But if it doesn't work properly on long exposures, that would explain why. I'll just have to work around this. Thanks. Link to comment Share on other sites More sharing options...
pvp Posted December 24, 2003 Share Posted December 24, 2003 <I>I don't see anything related to reiprocity failure. I did, however, receive an error message</I><P> It's on the page following the temperature data. As a fair-use plug for Polaroid's excellent data sheets, I present the following:<div></div> Link to comment Share on other sites More sharing options...
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