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  1. #21

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    Hollywood also had its early flirtation with two-color photography, and there's probably more in print
    per that kind of application than still photo.

  2. #22
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    I saw many grade "B" Hollywood productions using the 2 color method. They were awful movies and awful color.

    PE

  3. #23
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    Thanks guys,

    Ron, I can't wait to pick Mark's brain on this topic; had no idea there were 2 dye sets!

    Well, I guess you could say something fishy was going on...

  4. #24
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    Solantine Pink and Chicago Blue are two dyes that come close to being a usable pair. You need the right filters to match the dye set to expose the film. These would be at about 450 - 500 nm and 600 - 650 nm for starters.

    PE

  5. #25
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    Hey Elvis,

    Yep, like you discovered, those toners won't do the trick. You need to actually replace the silver with dye somehow, so that the dye is in proportion to the silver. Highlights should be clear (just as they would be with silver) and shadows full of dye.

    You're also right about needing 2 separate light sources if you're going to use filters to create the color; this is heading into additive country. You could do this too, and just use silver negatives with appropriate filters to view each through. The trick here is that you'll need to combine them for viewing somehow. This is analogous to the Kromskop.

    You could try dye mordanting with basic dyes (something like this, pg. 755), or making a gelatin relief image and using acid dyes, like dye-imbibition.

    Basic dyes have no affinity for gelatin, hence they need a mordant which can be made via the silver, whereas acid dyes generally are attracted to gelatin and so all you need is a gelatin relief image (think carbon method, or you could try a dichromate bleach). Realistically I think those are the two best paths.

  6. #26
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    You need to actually replace the silver with dye somehow, so that the dye is in proportion to the silver. Highlights should be clear (just as they would be with silver) and shadows full of dye.
    To do this, aren't you talking about something like kodachrome (as in modern) couplers?
    All this has happened before, and all this will happen again.

  7. #27
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    No, there are easier ways to do it.

  8. #28
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    Quote Originally Posted by DREW WILEY View Post
    Hollywood also had its early flirtation with two-color photography
    I found this a while ago: http://www.youtube.com/watch?v=NObu5...endscreen&NR=1

    I think it is a two colour movie film process. Gasparcolor.


    Steve.
    Last edited by Steve Smith; 05-17-2012 at 02:41 PM. Click to view previous post history.
    "People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.

  9. #29
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    Gasparcolor was 3 color and used dye bleach.

    PE

  10. #30
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    Steve, thanks for posting that, it looks really great! PE's right though; it's 3-color dye-bleach system, a precursor to Cibachrome, developed by Hungarian Bela Gaspar. A very interesting process, but only useful for printing color from separations, not capturing color directly from the scene (IIRC). It was widely used for animation also.

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