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  1. #11
    donbga's Avatar
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    Quote Originally Posted by pesphoto View Post
    Do you know what the cutoff date was for C22 vs C41 processing?
    Back in the '70s.
    Don Bryant

  2. #12
    Mark Antony's Avatar
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    I think C41 was introduced in 1977. If its C22 it'll say Kodacolor X.
    Any markings on the film?
    Mark

  3. #13
    Ian Grant's Avatar
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    Quote Originally Posted by railwayman3 View Post
    Just a note for anyone else with old Kodacolor....if it's marked C-22, don't let anyone accidently use C-41 process, it won't work.
    Not strictly true, if you use a pre-hardening bath and lower than usual temperatures then a C22 film can be processed in C41 developer. The colour curves won't be perfect but people used to get acceptable results.

    The horror stories arise because if a C22 film gets into a C41 commercial system the un-hardened film comes of its base with the higher processing temperature and leaves a mess of gunk on any other films being processed.

    Ian

  4. #14
    pesphoto's Avatar
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    Quote Originally Posted by Mark Antony View Post
    I think C41 was introduced in 1977. If its C22 it'll say Kodacolor X.
    Any markings on the film?
    Mark
    Hi MArk, I havent seen the film, but IM told it says kodacolor 620, but without seeing it I can tsay for sure. Will try to find out.
    Like your website by the way.

  5. #15
    donbga's Avatar
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    Quote Originally Posted by Mark Antony View Post
    I think C41 was introduced in 1977. If its C22 it'll say Kodacolor X.
    Any markings on the film?
    Mark
    The C-41 process was introduced to the public in 1972.
    Don Bryant

  6. #16

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    According to Wikipedia, C-41 was introduced in 1972 with Kodacolor II film; however, it was initially released only in 110 format, with other formats converting to C-41 from C-22 in 1973. Of course, even if the film was bought after 1973, it could be it was old stock C-22. I'd imagine your best bet would be to examine the roll for "process C-41," "process C-22," or similar markings. Failing that, Kodacolor II was C-41 whereas Kodacolor and Kodacolor-X were C-22, at least according to Wikipedia. Those are easy distinctions to miss, though.

    Note that any color film of this age is likely to produce poor results. You might prefer trying to process it in B&W chemicals to get a B&W image. This might produce better (but obviously non-color) images.

  7. #17

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    Quote Originally Posted by pesphoto View Post
    Do you know what the cutoff date was for C22 vs C41 processing?
    I believe that C-41 was introduced in 1972 or thereabouts?

  8. #18
    pesphoto's Avatar
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    Interesting stuff, thanks everyone.....

  9. #19

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    The label on the film wrapper might say "Process C-41" or "C-22".

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