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O/T: Help needed from film photographers:

Discussion in 'Other Off Topic Forum' started by Gatorrari, Apr 12, 2005.

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  1. Gatorrari

    Gatorrari F1 World Champ
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    Jim Pernikoff
    #1 Gatorrari, Apr 12, 2005
    I know this thread will be moved, and that's okay, but I hope to get some responses on this forum before it is moved.

    I inadvertently double-exposed a roll of film recently (Kodak Gold 200). Considering what can be done with photos on computers nowadays, does anyone know of a program which can analyze double-exposed photos and do a reasonably good job of separating the images into two separate ones?

    I don't care if this is something that can be done on a home computer or whether I would have to take the images (which I also have on PhotoCD) to a film lab, just as long as it doesn't cost an arm and a leg. Any ideas?
     
  2. HobbsTC

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    Thomas
    #2 HobbsTC, Apr 13, 2005
    You have a PM from me.
     
  3. milstanselnino

    milstanselnino Formula Junior

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    Jon P.
    #3 milstanselnino, Apr 13, 2005
    I believe you're right that it would have to be done on a copmputer. When you take a picture on film, it exposes the emulsion on the film. The developing process washes away layers that are exposed. When you do a double exposure, it is washed away in all exposed areas. The film makes no differentiation between the first exposure and the last.

    There are mechanisms to scan a negative into the computer, and with that you may be able to identify shapes, colors, or designs which may be kept or discarded. Don't know of a program, but believe that with patience it could be done. The big variable here is the similarity of the two shots. If the first shot is a brown dog, and the second a red 308, it might be easier. Quality will be an issue, I would think.

    Good Luck
     
  4. Artherd

    Artherd F1 Veteran

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    Ben Cannon
    #4 Artherd, Apr 13, 2005
    Wether is is entirely possible at all depends on:

    1) The type of pictures and how different they are.

    2) your level of quality you are willing to tolerate. Ie, 95% of the other image can be removed, but that last 5% will be lingering and just sort of generally 'wash out' the other. If these are just neat pics, you'll never know. If they are 8x10 large format for magazine ad, you will not be happy.


    It will not be cheap, the process is time consuming in the extreme. Think movie special effects budget, albit for 36 total frames :) Several grand.
     
  5. Ike

    Ike F1 Rookie

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    #5 Ike, Apr 13, 2005
    check around in the forums of photo.net. You may find some answers or you could post your question.
     

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