[pure-silver] New color head "discoveries"
- From: "J.R. Stewart" <jrstewart@xxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Wed, 12 Jan 2005 19:39:36 -0500
Well, my Omega Chromega Dichro DII came in last weekend and I've begun
testing. with VC papers. First VC I've printed in 20 years.
I've been using metol glycine based Ansco130 paper developer (modified by AA
and without hydroquinone).That's where I started. Problem is, the hardest
contrast I was able to get with 0Y/170M was about 0.8 on Forte Polygrade V
(boy is that paper really blue!!) and about 0.6 on Kodak Polymax Fine Art.
The softest contrast comes in about right at 1.8 (polymax) and 1.4
(polygrade).
Glycine is a much softer developer.. is that why I'm able to get no more
than ISO ~3.5 on the VC papers... do the emulsions require stronger
developers for satisfactory development? I tested my graded papers under
white light exposure, developed them in A130, and acquired the right scale.
I developed all the test prints at 6x factorial so I would think that would
be sufficient, and I was able to get max black.
I ran an Ansco 120 test last night. The test prints look better, but haven't
read them yet.
Also, I learned that both of these paper are very sensitive to the Thomas
safelite... I ran a screening test and at 5 minutes exposure I got fog that
appeared as Zone VI reflectance.. So, I move the safelight, unplug it, or
change papers to one less sensitive, and retest. Such is life.
J.R. Stewart
Leesburg, VA
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