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  1. #11
    Ian Grant's Avatar
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    Quote Originally Posted by smieglitz View Post
    Anyone else use dilution to push 'n pull?
    Joe
    Yes, I used to. With Rodinal and Tmax100 & APX100 I used 1+25 for N+2, 3+100 for N+1 & N, and 1+50 for N-1 & N-2

    With high dilution liquid developers, then varying the concentration seems to be a far better option, I also used this method with Ilfotech HC ) Ilfords version of HC110), and the first Tmax developer, before finally settling on Rodinal.

    Now using Pyrocat HD and Xtol my times are between Chuck's, and the other suggestions.

    N-2 -20%
    N-1 -15%
    N
    N+1 +20%
    N+2 +35%

    Ian

  2. #12
    Lee L's Avatar
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    Quote Originally Posted by smieglitz View Post
    Anyone else use dilution to push 'n pull?

    I used to use HC-110 at various dilutions and a set development time and temperature (6 minutes 20C). <snip>

    Joe
    Here are a couple of threads on using varying dilutions of HC-110 to control contrast.

    http://www.apug.org/forums/forum37/1...-dilution.html
    http://www.apug.org/forums/forum37/2...-dilution.html

    The info is from The Handbook for Contemporary Photography, 4th Edition by Arnold Gassan. 1977

    Lee

  3. #13

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    The basic general rule is +25% increase in time per stop, and -20% for pull per stop. Your agitation, exposure and preferences will dictate the final amount.

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