Copying 35mm B/W Negatives?

Discussion in 'Darkroom Developing and Printing' started by Marvin Rosen, Jul 15, 2003.

  1. Marvin Rosen

    Marvin Rosen Guest

    I have a slide copier coupled to my 35mm camera.
    I want to copy negatives to make negatives.
    Which b/w film & developer should i use?
    Alternatively could i use color slide film to
    copy b/w negatives? Which slide film?
     
    Marvin Rosen, Jul 15, 2003
    #1
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  2. I used to get satisfactory results using Plus-X exposed at EI 50 and
    developed for 7 minutes in HC110 diluted 1:15 from stock (not concentrate).
    The transparencies had high contrast and that had to be tamed somewhat
    through generous exposure and gentle developing.

    I used this to copy 4x5 transparencies and some slides for newspaper ads
    about 10 years ago - before digital hit and wiped out that side-line
    business for me.
     
    William Schneider, Jul 15, 2003
    #2
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  3. Marvin Rosen

    Lyle Gordon Guest

    You could try agfa scala or using a reversal process on something like t-max
    although the contrast might be a problem.

    -Lyle
     
    Lyle Gordon, Jul 15, 2003
    #3
  4. Marvin Rosen

    Peter Irwin Guest

    You might want to try Eastman 5360 Direct MP film. It is a very slow
    (around EI 0.3) copy film which forms direct positives (or in your
    case direct negative copies) with normal black and white developer.

    I've been using it at higher contrasts in Dektol, but I believe that
    if you want the contrast to be around the same as the original, something
    like D-76 1:3 for 5 minutes at 68F ought to be about right.

    You can get 100 feet of the stuff from Ted Pella for $23.

    Peter.
     
    Peter Irwin, Jul 16, 2003
    #4
  5. This is going to be tricky. Slide duplicating film, such as Kodak EDUPE,
    should work. Most other slide films will raise the contrast.

    A black-and-white slide film (they exist, but they're rare) might work.

    I think Kodak has recently discontinued Rapid Process Copy Film, which
    yields a positive image when developed in standard (negative) chemistry.
    (As best I understand it, it uses the Herschel Effect, a reversal that
    occurs with strong overexposure.) I saw bulk rolls of this film in the
    out-of-date discount bin at Showcase Photo in Atlanta
    (www.showcasephoto.com).
     
    Michael A. Covington, Jul 16, 2003
    #5
  6. Obsoleted, it seems, and replaced by Edupe.
    Oh yes, those $39.95 wonders from Cambridge Camera. Forgot about those.
    Forget about those.

    I use a Nikon PB5 bellows, slide attachment and Micro-Nikkor and don't
    have any problems. The Beseler unit is nice though: you don't have to tape
    CC filters to the slide holder, the light source is always the same....
     
    Nicholas O. Lindan, Jul 16, 2003
    #6
  7. Marvin Rosen

    Manny Bhuta Guest

    I have the Beseler slide duplicator. But, I no longer use it. I find
    that it is much more convenient to use my enlarger. What I did is make
    a jig that holds the camera without any lens.
     
    Manny Bhuta, Jul 16, 2003
    #7
  8. You still haven't adressed the issue of why you'd want to do this. The
    results are going to horrible.
     
    Michael Scarpitti, Jul 17, 2003
    #8
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