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Old 8th June 2020, 04:09 PM
Martin Aislabie's Avatar
Martin Aislabie Martin Aislabie is offline
Join Date: Nov 2008
Location: Stratford-upon-Avon, England
Posts: 1,667

Film emulsion fractures easily with thermal shock.

So, in answer to your question - no I'm sure your first couple of seconds at wash water doesn't have to be at 38degC - but it will need to be 38 +/- 2~3C throughout the entire period - including the first couple of seconds.

One hears of many photographers who process their own film complain about grain - most are likely to be suffering from reticulation (fracturing of the film emulsion due to thermal shock)

Hope this helps

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