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  1. #41
    Mustafa Umut Sarac's Avatar
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    Photo Engineer is older than my father and crown jewel at this forum . I am very satisfied with his copper answer. Its hot and life is not easy , lets not make it harder for anyone.

    Thank you PE for everything ,

    Umut

  2. #42

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    Quote Originally Posted by ColdEye View Post
    But is there a process that makes red images??
    One of the old photos mags in the 70s had an article on making reddish colored prints using copper. The color was red, with a bit ot brown tint, if I remember right. It needed UV to print, and the time I played with it I never got a very deep D-Max on the prints.

    The process uses copper sulfate, sodium citrate, sodium acetate, and potassium ferricyanide.

    Here's an example I found on the web:
    http://www.flickr.com/photos/3674374...7629874246054/

    And a nice article on it:
    http://silverghost.stanford.edu/copper/index.html
    Kirk

    For up from the ashes, up from the ashes, grow the roses of success!

  3. #43
    holmburgers's Avatar
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    Has uranium printing been mentioned for red? If not... uranium.
    If you are the big tree, we are the small axe

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