From: Robert W. Schramm (schrammrus@hotmail.com)
Date: 05/08/00-09:25:18 AM Z
Andre,
Try one more test. Using the TF, mix two (2) parts A to one (1) part
B. I have found that this results in an image very similar to the
Ware Process.
BTW, if you are using heat drying, don't, as it will result in a
loss in tonal range compared to air drying.
Bob Schramm
>From: Andre Fuhrmann <Andre.Fuhrmann@uni-konstanz.de>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Cyanotype Questions
>Date: Mon, 08 May 2000 10:42:00 +0200
>
>>On Sun, 7 May 2000, Maylee Noah wrote:
>>>
>>> I mixed up a batch of the traditional formula too and tested both on a
>>> variety of papers. Ware's formula has a much richer dmax but the
>>>traditional
>>> formula was less finicky about what paper I used. Crane's platinotype
>>>was
>>
>>Maylee, you seem a likely prospect to resolve the question still hanging
>>in air: Did you doublecoat the traditional formula and give it an acid
>>bath on the order of the acid bath for the "new"? I'm told either or both
>>stategies can bring the traditional formula close to the new in d-max...
>>
>>Still wondering,
>>
>Judy
>
>2 weeks ago I decided to end my wondering by doing some tests with
>both formulas. Here is what I found:
>
>Comparison: Ware's formula, aged 4 mths (WF); trad. formula, ditto (TF).
>
>Setup: Arches Aquarelle 200g. Tween. Single but good coating with
>foam brush. After exposure (artificial UV light) prints were put
>through 2% acid for minute. Final wash 20 minutes.
>
>Exposure: WF is about twice as fast (5 versus 10 or more minutes).
>
>Bleaching/bleeding: Less so with WF. But with TF BB can be
>compensated for by overexposure and is greatly reduced by the acid
>bath.
>
>Final image:
>WF gives a flatter print; the euphemism for that is "longer tonal
>scale". TF is much contrastier. Dmax about equal, perhaps even
>higher with TF.
>
>Final judgement (my wife):
>"I like these ones (=TF) better." -- "But look, this one (=WF) has a
>longer scale!" -- "Don't know what you mean. I just like them
>better. Die sind einfach sch"oner!"
>
>Suspicion:
>WF deteriorates with time.
>
>Resolution:
>Next time I shall try mixing WF and TF: the former for highlite
>rendering, the latter for working up contrast.
>
>-- Andre
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