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Thread: Pre-exposure and expodisc

  1. #1
    45-57-617
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    Oct 2006
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    Toowoomba, Queensland
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    Pre-exposure and expodisc

    Hi,

    Can someone tell me if and how one might use an expodisc in making pre-exposed images?

    Is it possible to use something else instead?

    I'm thinking of a pre-exposure of -2.666 EV.

    Rgds,

    Steve

  2. #2

    Join Date
    Apr 2006
    Posts
    447

    Re: Pre-exposure and expodisc

    Disc instruction sheet is at:
    http://www.expoimaging.net/MediaFile...ions/EN_16.pdf

    I've used one for pre-exposure. Been awhile but I believe you would meter through the disc. Then take that reading and close the lens down 2 1/3 stops from it to get what you want. You can also try a piece of diffused plastic or glass. or a Styrofoam cup.

  3. #3
    45-57-617
    Join Date
    Oct 2006
    Location
    Toowoomba, Queensland
    Posts
    643

    Re: Pre-exposure and expodisc

    Hi Chuck,

    I do like the Syrofoam cup idea! It occurs to me that sitting the half-dome of an exposure meter behind a flat disk is not going to get me the correct exposure. Thanks for the link too.

    Cheers,

  4. #4

    Join Date
    Aug 2000
    Location
    California
    Posts
    3,371

    Re: Pre-exposure and expodisc

    Nothing works better than a styrofoam cup, and they are easy to find.

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