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    Re: Help with developing results good and bad

    Sometimes the wash water temperature will increase and decrease without our knowing it and some films may be affected while others aren't.
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    Re: question about stacking square filters

    Yes. if you are using Wratten filters... don't stack them. The filters are very strong. But if you are using CC filters then you can stack them. CC filters come in different densities... .025,...
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    Re: C 41 lab recommendation, please

    Oscar's Photolab on Brannen Street on San Francisco.
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    Re: Help with developing results good and bad

    It almost looks like reticulation. That's when the film emulsion is softened due to too warm of wash water or chemicals and then it is placed into water or the next chemistry that is quite cooler...
  5. Re: How to Calculate Bellows Extension correction for a true Telephoto lens?

    Hello There - I am new to the forum. To answer your question on how to address the bellow extension as it affects exposure... this is what I came up with. The F stop number is a calculation of the...
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