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Thread: Additive Color

  1. #1
    dehk's Avatar
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    Additive Color

    Say I want to do some additive color, using black and white film with R G B filter. Do I want to expose them in the same exposure, or should I adjust according to the filter factors?
    - Derek
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  2. #2

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    Of course you apply the appropriate factors. You need to make three separate exposures in correct registry, too.
    Last edited by E. von Hoegh; 04-11-2012 at 02:20 PM. Click to view previous post history.

  3. #3
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    The goal is this: If you have a grey card or grey scale, you want the densities to be identical in all 3 negatives. With most films and filters this will require different exposures and could even require different development.

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    dehk's Avatar
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    Thanks guys.
    - Derek
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    Let us know what your results are, I'm becoming interested in this process. It may end up the only way to do color in the sheetfilm sizes.

    Good luck!

  6. #6
    dehk's Avatar
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    Quote Originally Posted by E. von Hoegh View Post
    Let us know what your results are, I'm becoming interested in this process. It may end up the only way to do color in the sheetfilm sizes.

    Good luck!
    It's going to be a while since I couldn't find my green filter, but will do!
    - Derek
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  7. #7

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    Tri-color photography...

    There are a couple of sets of filters for which all share the same filter factor... makes it far easier. But my darned memory... I "think" one set is a 29, 47 and 61?? Don't ask me to remember the filter factor...



 

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