Very Old Latent Image

Discussion in 'Darkroom Developing and Printing' started by Jean-David Beyer, Dec 9, 2008.

  1. Very good, unless you stored them next to a strong heat source, in very high
    humidity,
    or x-ray machine.
    If it is a really professional lab, they will not. If they are a 1-hour lab
    in a mall, they will not know how to process it.
    Do it yourself, and develop normally with a normal developer like D-76 or
    HC-110 dilution B.
     
    Jean-David Beyer, Dec 9, 2008
    #1
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  2. Jean-David Beyer

    Ken Hart1 Guest

    They will surely be age-fogged, this will result in low contrast images.
    There are developers and additives that can help with this.

    There is a company in Canada called Film Rescue International, which
    specializes in processing old film. I've spoken with the owner, Greg Miller,
    who has developed several special 'secret' techniques for dealing with
    obsolete and old films. If you are in the USA, he also has a US mail drop,
    so you don't have to deal with Customs.
     
    Ken Hart1, Dec 9, 2008
    #2
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  3. Jean-David Beyer

    VOR-DME Guest

    Have read some articles here and there about astonishing persistence of a
    latent image on exposed film. I have a couple of rolls of Tri-X 120 from
    the mid to late '70's. Every time I have had a darkroom to work in these
    rolls were not anywhere near me, so they remain undeveloped.

    What are the chances of recovering an image from these rolls?

    If I take them to a pro lab, will they laugh me out of the place?

    The images are nothing important - only curiosity - I don't even really
    know what's on them, but I'd love to see. What's my best strategy for
    getting these rolls developed?

    Thanks for responses. . .

    Greg
     
    VOR-DME, Dec 9, 2008
    #3
  4. Rodinal is almost 100 years older than that.

    Geoff.
     
    Geoffrey S. Mendelson, Dec 10, 2008
    #4
  5. Jean-David Beyer

    VOR-DME Guest

    Thanks to all for taking the time to provide these informative responses.
    Greg Miller's service looks like a good bet to me - I have looked it up
    and the prices are more than reasonable as well.

    I'll get back to you all here to let you know how it worked out.

    Greg

    PS - I was somewhat surprised to see the response about HC-110 and D-76,
    as these are the developers I was using the first times I ever worked in
    a darkroom - say 1969 . . . I would not have guessed they were still
    around.
     
    VOR-DME, Dec 10, 2008
    #5
  6. The development process for the Ektachrome films was more of a simplification
    than a major change in chemistry. What used to be develop, stop bath, rinse,
    expose to light, color develop, stop bath, bleach, fix and stabilize has
    be reduced to three steps that do basicly the same things, using mostly
    the same chemicals.

    The biggest change in chemicals was in E4 going to E6 and c22 going to c41
    with the elimination of formalin as a stabilizing agent. That was done for
    environmental and personal saftey, the other changes were to increase
    automation and decrease processing time.

    The film speed, contrast, and dyes have changed over the years too, but that
    was not due to processing. C-41/E6 films have ranged from ISO 25 to 3200, high
    contrast to low, and with various levels of color saturation, dye stability,
    etc. Anyone remember Ilfochrome?
    Some things can't be compensated for by using other films, some things
    die off because there are not enough customers to continue them. People
    have been saying film is dead, which I don't really believe, but it has
    retired and moved to Florida.

    While Kodachrome I has been long gone, replacements have never really taken
    off. Ektar 25, which was as close to it that a negative film could be, was
    never a big seller and eventually was dropped. There are some modern slide
    films that are close, having recently been developed with that in mind,
    and we shall see if they sell enough to last long.

    I'd still love to see Panatomic-X come back.


    Geoff.
     
    Geoffrey S. Mendelson, Dec 11, 2008
    #6
  7. Jean-David Beyer

    VOR-DME Guest

    True what you say about films emulsions.
    I guess my surprise in finding the classic old developers still used is
    at least in part based on the fact that I have seen so many emulsion
    types come and go over the years. Also the processing chemistry for color
    films has changed several times (I recall E3, E4 and C3 if my memory
    serves me well, before settling on today's E6 and C-41).

    Each new emulsion is supposed to bring improvements, but there is often
    some lingering skepticism. Just as Ernst Haas regretted the demise of
    Kodachrome I, others regret Vericolor VPL for long exposures. . .
     
    VOR-DME, Dec 11, 2008
    #7
  8. E6 is a 6-step process. There are 3-step processes that will give you a
    color image from films intended for process E6, but they will not give
    you a very _good_ color image!
    Actually, the removal of formaldehyde from E6 and C41 was a very, very
    late change. It required the reformulation of dyes in some C41 films,
    which was probably pretty painful for Kodak to do. You can still get
    the older type of stabilizer because there are still films which require
    it; these process changes were made only about five years ago.
     
    Thor Lancelot Simon, Dec 13, 2008
    #8
  9. Jean-David Beyer

    John Guest

    _____
    About 5 months ago i found some Tri-X 120 and 220 rols i had exposed
    in 1993. I made up a fresh batch of D76, and processed the rolls
    using a 15% increased development time to improve contrast. Yes,
    there was more base fog, but the negatives were quite printable.

    / J

    ---
     
    John, Jan 14, 2009
    #9
  10. Jean-David Beyer

    darkroommike Guest

    The other big change with the "new" processes was in the bleaches, e-4
    and c-22 use ferricyanide bleaches, the newer e-6 and c-41 use kinder
    gentler EDTA based bleaches. Note that King Concept Imagemakers for a
    while used a bastard e-6/e-4 process with E-6 developers and E-4 fixer
    and bleach, and that many home-brew formulations also use the older
    bleach (and stabilizer!) recipes.
     
    darkroommike, Feb 21, 2009
    #10
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