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Water Stop

This was the outcome of a trial using water instead of acid stop to retain the alkali pH as an acid bath can cause grains of the films to clump together or even swelling of the gelatin, which can lead to a loss of image integrity.

The problems with using water instead of an acid stop is that the developing isn’t stopped immediately and so the developing time needs to be reduced slightly.

For this trial I dropped the time in HC-110 from 7 minutes to 6 minutes and cold water stopped with a simple fill-agitate-refill cycle for one and a half minutes – but even so the two images show the range in contrast from this trial.

This was also using a Nikon F2A from 1973 with a 50/1.2 lens which is Nikons fastest manual lens.

Posted by simon on December 19, 2010

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