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Thread: "Longevity" of Exposed C-41 Film

  1. #1

    Join Date
    Feb 2007
    Location
    SF Bay Area, CA
    Posts
    50

    "Longevity" of Exposed C-41 Film

    How long can I let freshly dated, exposed color negative film stay undeveloped (at room temperature) before I see any deterioration or change in the image (color shifts, darkening/lightening, etc). Thanks,

    Vijay

  2. #2

    Join Date
    Sep 2003
    Posts
    1,794

    Re: "Longevity" of Exposed C-41 Film

    The latent image will keep quite a while. Just think of all those people who shoot Christmas,easter and Christmas again on the same roll.

    Will there be a change? I think that's the wrong question. The question should be can the filter pack handle it?

  3. #3

    Join Date
    Jan 2000
    Location
    Boulder, CO
    Posts
    86

    Re: "Longevity" of Exposed C-41 Film

    A couple of years ago I cleaned out the fridge, the desk drawers, the glove compartment, etc. and found 85 rolls of old, exposed C41 film. Most of this film was consumer grade film, witch I understand holds up better in long term storage under adverse conditions. I developed it all at home using Tetenal chemicals, and the bottom line: up to 20 years after exposure, no problems. No serious color shift, no excessive fog, no speed gain or loss. Beyond 20 years I started to see unacceptable color shift, thin negatives, and excessive grain.

  4. #4

    Join Date
    Aug 2007
    Posts
    11

    Re: "Longevity" of Exposed C-41 Film

    Last week I found about 20 sheets of Fuji 4x5 NPS that were exposed 5 months ago and had them processed at the local lab and they were all fine. I had the lab make contact sheets and the printer said they were all good, with no color shift.

  5. #5

    Join Date
    Nov 2007
    Posts
    132

    Re: "Longevity" of Exposed C-41 Film

    don't throw away the expired film. throw it in fixer and extract all the silver, and then send the "waste" to me.

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