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Thread: Stop bath

  1. #31
    Ole
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    I'll just insert a shameless plug for OF-1 here - see Chemistry Recipes
    -- Ole Tjugen, Luddite Elitist
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  2. #32
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    Will try this question one more time-

    Does anyone know anything about the 'Alkali-STOP' offered by

    http://www.monochromephotography.com.
    "Just because nobody complains doesn't mean all parachutes are perfect."

  3. #33
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    "wash only shortly, you live in danger of having dichroit fog on your negatives "


    Oh no! What is this - please elaborate.

    I have putting my sheets of film into a tray of water (prior to fix) to allow shadow development to continue as I mentioned-works great- this causes some kind of fog?
    Do I have an archival issue with these negs?

    Matt

  4. #34
    rjr
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    Matt,
    the only time I experienced that kind of fog was with RC paper - it resulted in a pink stain in the white borders.

    What happens is that development continues in the fix, fix and dev work against each other - my best guess is that the desensitizing or sensitizing dyes are responsible for the tone. But I have heard that it happened on film, too, there was a sample posted at photo.net a while ago.

    The guy ended up with partially pink casted negatives that might influence the print in the way a staining mask does - imagine a evenly toned texture, partially stained and thus showing differences in the tones on the print.

    But you are probably safe - you let the developing agents do their work on the emulsion and "die" before putting the negative in the fix.
    Tschüss,
    Roman

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