From: Sandy King (sanking@clemson.edu)
Date: 05/19/03-12:16:10 PM Z
Linas,
One of the major points about my method of kallitype is
simplification. My advice is just go back to the long development
times that are recommended and replenish your developer as needed to
maintain consistency. Why complicate matters when the method works
beautifully as described?
Hard to know why your method of processing resulted in a loss of
sharpness. However, the method as I describe it gives prints that are
as sharp as you can get on Stonehenge paper.
Sandy
>Sandy,
>I just read your Kallitype article on unblinkingeye.com. Excellent!
>I’Äôve experimented with the procedure you posted here a while back
>with some success.
>
>During my trials I used a different clearing method (my Pd/Pt
>development/clearing method) resulting in some variation from what
>you describe. Basically, what I do is develop for about 30-45
>seconds, decant(and save)the developer and then clear with one or
>two changes of a hot (120F) solution of citric acid (approx 5 gm
>citric in about 1 liter) for about 5 min. My reasoning is that any
>longer in the developer (potassium oxalate for Pd/Pt, sodium citrate
>for Kallitype) does not contribute to the image formation, rather
>only undesirably clears iron into the developer, which I intend to
>reuse. So I change from developer to the clearing bath earlier. My
>hot citric acid clearing bath works great for normal Pd/Pt. However,
>with Kallitype this hot clearing bath turns the Kallitype image
>bright yellow. Subsequent Pd or Pt toning by your method turns this
>yellow back to a strong dark image, which while beautiful in it’Äôs
>own way, is subtly less sharp than my Pd/Pt prints. Even if the
>color is identical, I can distinguish these Kallitypes from my Pd/Pt
>prints. This was on Crane's 90# Cover or Stonehenge.
>
>I suspect my hot citric acid bleaching and subsequent toning is the
>difference. Anyone else see such a yellow image after clearing? By
>yellow, I mean bright yellow, not light brown.
>
>Linas
>
>
>Linas Kudzma
>lkudzma@earthlink.net
>
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