RE: Prussian (Berlin) Blue vs Turnbull Blue in Cyanotype

From: Judy Seigel ^lt;jseigel@panix.com>
Date: 11/06/03-09:24:37 PM Z
Message-id: <Pine.NEB.4.58.0311062210500.25293@panix1.panix.com>

On Thu, 6 Nov 2003, Monnoyer Philippe wrote:

> Thanks Judy.
>
> Note that my question was more about the aspect of the two blues. Are
> they different in tone or stg ? The idea behind using positive cyanotype
> is to avoid enlarging negative. Just enlarged "inter"positive would be
> sufficient in this case. I'll give feedback to interested people.

I'd assumed that was your motive, but I wonder if you're overlooking a
couple of points... first there is no one absolute "cyanotype" print
color, but variations, generally from a kind of "royal" blue to a greenish
blue, according to the paper it's printed on, and I suppose other
variables of the process, eg how long the emulsion has been on the paper,
the water you're developing in, possible clearing bath, etc. I remember
John Dugdale choosing his paper tried several dozen til he got one that he
really liked "the color" of.

The other thing is.... you may be the one to finesse this perfectly, but
for the mere mortals I've observed, making a negative is FAR easier than
that "reversal" process. (I mean do you suppose cyanotype printers LIKE
making enlarged negatives???? I myself would rather do income tax.)

Judy
Received on Thu Nov 6 21:24:49 2003

This archive was generated by hypermail 2.1.8 : 12/04/03-05:18:02 PM Z CST