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Thread: Kodak T-Max 100 Sheet Film Long Exposure

  1. #1

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    Kodak T-Max 100 Sheet Film Long Exposure

    I shall be attempting some coastal long exposure this week with Kodak T-Max 100 and a 10 stop ND filter.

    Exposure times are estimated to be between 2 - 5 minutes.

    Does anyone know if there is any contrast increase with this film when using long exposure times. I thought I read somewhere that Kodak says no but cannot seem to find where I read it.

    Ian

  2. #2

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    Re: Kodak T-Max 100 Sheet Film Long Exposure

    Ian,

    For that length of time you can expect about a 2-1/2 stop increase in contrast. There are charts floating around giving reciprocity and increase in exposure contrast. Try Unblinkingeye web site, and also Barnbaum ARt of Photography book.

    Mike

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    Re: Kodak T-Max 100 Sheet Film Long Exposure

    Quote Originally Posted by Michael Rosenberg View Post
    Ian,

    For that length of time you can expect about a 2-1/2 stop increase in contrast. There are charts floating around giving reciprocity and increase in exposure contrast. Try Unblinkingeye web site, and also Barnbaum ARt of Photography book.

    Mike
    Thanks Mike. That's more than I had hoped for. I know Fuji Acros would be the best choice here but I only have FomaPan and T-Max 100.

    I Might have to rethink this one through

    Ian

  4. #4

    Re: Kodak T-Max 100 Sheet Film Long Exposure

    You could always adjust development (or wait for the right lighting) to lessen contrast.

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  5. #5
    Jim Jones's Avatar
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    Re: Kodak T-Max 100 Sheet Film Long Exposure


  6. #6

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    Re: Kodak T-Max 100 Sheet Film Long Exposure

    I don't make really long exposures that often, but when I do it is one of the rare times I shoot two identical negatives. Develop the first one and decide if I need to cut more time off it to tame the contrast. The first one will get 15 to 20% less time than normal.

  7. #7

    Re: Kodak T-Max 100 Sheet Film Long Exposure

    I like this idea. If you're going to shoot this regularly, you could work up some test curves at the new exposure.

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  8. #8
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    Re: Kodak T-Max 100 Sheet Film Long Exposure

    Done lots of long (longer than you are talking about) exposures on T-Max. Follow the reciprocity chart and findings and cut development for 15-20% every extra stop given for correction. Bracketing and multiple shots per scene is definitely recommended.
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    All comments and thoughtful critique welcome

  9. #9

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    Re: Kodak T-Max 100 Sheet Film Long Exposure

    Quote Originally Posted by Jim Jones View Post
    Thanks Jim, will go and have a read

  10. #10

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    Re: Kodak T-Max 100 Sheet Film Long Exposure

    Quote Originally Posted by Kevin Crisp View Post
    The first one will get 15 to 20% less time than normal.
    Is this to compensate for the increase in contrast due to the length of the exposure

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