Re: Glossy Kallitypes
Sandy,
I don't have a transmission densitometer; but am thinking of trying
something like in BTZS book with my spot-meter. In mean time, I'm
testing with same negative & same exposure, etc. for Kallitype on
COT-320, Arches Platine and on fixed photo paper; and the results
are entirely different with solarization in shadows & border for the
photo paper. I could reduce exposure for photo paper but risk losing
detail in the highlights.
Thanks,
Doug Howk
On May 28, 2007, at 4:48 PM, Sandy King wrote:
Doug
Solarization is normally caused by over-exposure in the shadows. Do
you have any means of measuring the density of your negatives? If
so, what is Dmin (shadow density) and Dmax (maximum shadow density)?
Sandy
At 4:38 PM -0400 5/28/07, dhowk wrote:
I've experimented with Kallitypes on glossy or semi-glossy paper,
but have solarization problem. With COT-320 & other watercolor
papers, gold-toning before fixing seems to control solarization,
but not on glossy paper. I've been using Sodium Acetate or Sodium
Citrate as developers with tartaric acid & Potassium Dichromate as
additives.
For the paper, I've tried fixed photo papers including Bromoprint
& Oriental Seagull graded. Following Dick Stevens' advice in his
book, I've tried varying the silver to iron ratio in sensitizer
with as high as 3:1 for Silver Nitrate to Ferric Oxalate. This
does seem to give some control, but does not totally eliminate the
solarization. Am I missing something or is it not possible to do
good Kallitypes on glossy paper?
Thanks,
Doug Howk
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