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Thread: push/pull times for Acros in Rodinal?

  1. #1

    push/pull times for Acros in Rodinal?

    Can anyone give me any times/formula etc. for N+1 & N-1 development of Fuji Acros in Rodinal?
    It'll be rated at 80 in 1:50 Rodinal, and when I say push/pull I mean for zone system contrast control rather than up/downrating the film speed.

    I of course intend to conduct my own tests, but it would be good to have some idea of what to go for so I don't use more film than I need to.

    Thanks!

    Alex

  2. #2

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    Re: push/pull times for Acros in Rodinal?

    then you should change your title to "expansion/contraction".

  3. #3
    Corran's Avatar
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    Re: push/pull times for Acros in Rodinal?

    You should test but I will say my rule-of-thumb for expansion/contraction with Rodinal was 15-20% more or less development depending on which way you were going, per N number. I also didn't rate things differently for different N values, I just placed the lower Zones properly using my spot meter.
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  4. #4

    Re: push/pull times for Acros in Rodinal?

    Quote Originally Posted by Corran View Post
    You should test but I will say my rule-of-thumb for expansion/contraction with Rodinal was 15-20% more or less development depending on which way you were going, per N number. I also didn't rate things differently for different N values, I just placed the lower Zones properly using my spot meter.
    That's great thanks - 15-20% seems like a sensible starting point so i'll give it a go.

  5. #5

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    Re: push/pull times for Acros in Rodinal?

    I recommend a factor of 1.4 for a whole stop difference in exposure.

  6. #6

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    Re: push/pull times for Acros in Rodinal?

    Quote Originally Posted by vinny View Post
    then you should change your title to "expansion/contraction".
    Right on Vinny!
    I get so tired of the"Push-Pull" talk I could puke. The terms have no true meaning in sensitometry.

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