Phillip Cohen
(K=10561) - Comment Date 11/15/2004
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John,
The only critical temperature is the developer. A degree of change either way can over or underexpose your highlights so keep it at a constant 68 if that is where you use it and adjust your times accordingly. The temps of the rinse, stop and fix are not critical as long as they are not super hot or super cold, if they are within between 55 and 80 degrees you will be fine. It used to be more of an issue in the olden days due to the type of emulsions used. If the other steps were not close to the same temperature the emulsion would reticulate causing a crackle type effect (reticulation). With the current films it is almost impossible to acheive this effect, you pretty much have to put the film in super hot water then drain it and move it to the freezer, and then it only reticulates if you are lucky.
Phil
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Jon O'Brien
(K=11321) - Comment Date 11/16/2004
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Thanks Phillip - that makes things a bit easier.
Cheers,
Jon
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Sue Brown
(K=17) - Comment Date 11/29/2004
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Reticulation happens after developing? I was trying to achieve reticulation recently (because I just like to experiment). I used 100 degree water to mix with my D76. That did not cause any reticulation.
What if I developed the film normally (68 degrees), went through the stop bath (water) and fixer normally, then filled the metal tank with water and froze the film? Would that do it?
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Jon O'Brien
(K=11321) - Comment Date 11/29/2004
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Man.. I'll bet it would do something alright! what is reticulation, anyway? I was envisioning some kind of emulsion-cracking effect, which would make sense if you were subjecting the film to rapid and extreme temperature changes (because the emulsion and backing layers would expand and contract at different rates, I would think).
Jon
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Sue Brown
(K=17) - Comment Date 11/29/2004
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Yeah, it's a cracking effect. The book "Black & White Photography A Basic Manual" by Henry Horenstein has an example on page 76. It looks really cool, and has inspired me to want to try it!
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Frank Vincent
(K=32) - Comment Date 11/30/2004
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Follow this link to get the most specific recommendations about temperatures for film processing. Greg seems to have quite a lot of experience developing film.
http://teachnet.edb.utexas.edu/~leica/hc110.html
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