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Reciprocity and intermittency effects in enlarging paper
Previously noted elsewhere, but for those who don't read APUG or
the Pure Silver list ... There is a new application note on reciprocity and intermittency effects in enlarging paper on the Darkroom Automation web site. http://www.darkroomautomation.com/su...ermittency.pdf The short synopsis is - there aren't any. -- Nicholas O. Lindan, Cleveland, Ohio Darkroom Automation: F-Stop Timers, Enlarging Meters http://www.darkroomautomation.com/index2.htm n o lindan at ix dot netcom dot com |
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Reciprocity and intermittency effects in enlarging paper
"Nicholas O. Lindan" wrote in message m... Previously noted elsewhere, but for those who don't read APUG or the Pure Silver list ... There is a new application note on reciprocity and intermittency effects in enlarging paper on the Darkroom Automation web site. http://www.darkroomautomation.com/su...ermittency.pdf The short synopsis is - there aren't any. That's a landmark study, for me anyway. I've read in so many places that multiple exposures will not create the same exposure as the product of the steps due to latency issues. I believed it. But something else was happening. I attribute the product difference of many short steps to the inconsistency of using a Time-O-Lite (which I had marked in F-Stops with only modest success and some real inconvenience.) But now I have the Darkroom Automation F-Stop timer. Very cool. Thanks again. |
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