I trust William Robb's opinion, and I've heard him write (man, now THAR's a conundrum) many times that C-41 cannot really be pushed. Why is it that such is true of neg film, but not slide film?
-Lon
William Robb wrote:
----- Original Message ----- From: "Pat"
Subject: Film processing
Can someone please help me understand the automated C-41 developing
process? I
have shot a roll of ISO 400 color negative at 800 speed. What is done differently at either the processing or printing stage? The regular photo
guy I
trust to take care of my processing is on extended leave. His
replacement(s)
look at me blankly when I ask them this question.
The film is taped to a leader card and then inserted into the processor. The drive pulles the leader card, which in turn pulls the film. Some people say you can push process C-41 film successfully, a one stop push extends the development from 3:15 to 3:45. Personally, I don't think push processing C-41 does anything other than increase the mask density. At the printing stage, the exposure time will be shortened to compensate for the lower density negative.
William Robb
