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Thread: really thin film = positive image + negative image

  1. #1
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    really thin film = positive image + negative image

    hi there:

    can anyone tell me why you can see a postive image if you hold unprintable thin negatives and look at them ( at an angle )? there is barely a visible image on the film.

    i have always figured it was just something that happened when the light hit the film "funny" and it probably happens with normally exposed film, i just can't see it very well.

    thanks!

    john
    enjoy your coffee

  2. #2

    Join Date
    Mar 1999
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    769

    really thin film = positive image + negative image

    When held at the right angle, the silver will reflect light while the areas without silver will allow the light to pass through. This means the areas with more silver (the highlights) will look lighter than the areas with less silver (the shadows). Hence the impression of a vague positive image. Cheers, DJ

  3. #3
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    really thin film = positive image + negative image

    dj!

    thank you very much for the explanation

    -john
    enjoy your coffee

  4. #4

    Join Date
    May 2004
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    115

    really thin film = positive image + negative image

    and that phanamenon is exactly how an ambrotype and ferrotype image works..

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