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  1. #111
    Photo Engineer's Avatar
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    As an afterthought, you need couplers, solvents, about 9 emulsions, sensitzing dyes, a colloid mill, scavengers, acutance dyes, and a few more odds and ends, not to mention all of the formulas to prepare the above.

    Reminds me of an old Melaine song "I have a pair of brand new roller skates, you have a brand new key". Of course the song was quite lurid in meaning, but the point applies. Having done every phase of Gold 400, I know all of the above. I also know the coating formula.

    PE

  2. #112

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    Quote Originally Posted by Dark Orange View Post
    An update for those people still interested.

    I will see if I will have time this week to photograph some of the reaction chambers and emulsion preparation equipment he has built.
    I and I'm sure others would love to see photos of some of the reaction chambers
    and other gear! Please let us know if you can add them to Flikr.

    Emulsion.

  3. #113

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    Quote Originally Posted by Photo Engineer View Post
    Color!

    PE
    Or Kodachrome.

    Cheers,
    Clarence

  4. #114

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    Or Kodachrome.
    *hands Clarence a top-shelf stuffed teddy-bear*


  5. #115
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    Kodachrome is a subset of color.

    I wish you good luck coating it. It can be done without all of the couplers and colloid mill, but is going to require the unique processing chemistry. And the design stages of the film are very intensive to get things right.

    I hope everything works out well for you.

    PE

  6. #116
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    I was thinking about this.

    The cyan (red senstized) layer needs to use a sensitizing dye that is retained during the first developer so that the bottom (cyan) layer can be re-exposed to red light. Since all other dyes are designed to wash out, you need a very particular dye for the cyan layer that will not wash out until the silver is bleached away.

    Getting this dye is going to be a major requirement for your project.

    PE

  7. #117

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    perhaps he is going to try the original Mannes & Godowsky Process by controlled diffusion without selective re-exposure...

  8. #118
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    Well, after my initial OMG in response to your post, my second thought was that the coating problems will be even more severe, as the M&G method required very precise diffusion rates and therefore precise thicknesses and hardness.

    PE

  9. #119

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    l'ours en peluche

    Quote Originally Posted by Photo Engineer View Post
    Kodachrome is a subset of color. ....
    PE
    Indeed! I should have said, "Specifically Kodachrome". I too had a (much less informed) OMG reaction, and almost didn't post. However, they have been pretty much telling us that Kodachrome is their target, so I thought it would move the discussion along. At any rate, I plan to be in Rochester this summer, so I will gladly forfeit the virtual teddy-bear to you.

    Cheers,
    Clarence

  10. #120
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    Clarence;

    You must stop by!

    Ron



 

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