From: Martin Reis (mreis@tafelmusik.org)
Date: 02/18/02-09:09:04 AM Z
Thanks Bob,
I will try this without that once the weather gets a bit better
here up north.
Cheers
Martin
-----Original Message-----
From: Robert W. Schramm [mailto:schrammrus@hotmail.com]
Sent: Sunday, February 17, 2002 12:39
To: alt-photo-process-l@sask.usask.ca
Subject: RE: basic question on mixing up cyanotype sensitizer
Martin,
About a year ago I tested this and a number of other things associated with
cyanotype. I used a step tablet. There was a loss of one to two steps of
contrast when heat was used to dry the paper. Maybe not enough to be
perceptable ordinarily. When a small fan was used without heat, there was no
loss of contrast.
Bob Schramm
>From: Martin Reis <mreis@tafelmusik.org>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: RE: basic question on mixing up cyanotype sensitizer
>Date: Fri, 15 Feb 2002 14:52:18 -0500
>
>"By the way, don't use heat to dry for it will result in a loss of
>contrast. Let it dry naturally or use a fan."
>
>Really. Had no idea. I have been using a hand held hair dryer and drying
>gently with heat ... Still getting good contrast! I will try without the
>artifical heat and see ... good tip. Thanks!
>Martin
>
>
>-----Original Message-----
>From: Robert W. Schramm [mailto:schrammrus@hotmail.com]
>Sent: Friday, February 15, 2002 14:28
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: basic question on mixing up cyanotype sensitizer
>
>
>
>Hadi,
>
>If you are talking about bright sunlight the answer is yes, but
>you have nothing to worry about under normal incandescent illumination.
>Actually, it is best to coat paper under a low wattage incandescent bulb
>because you can see the sensitizer on the paper and that helps you get an
>even coating. The paper itself is not really light sensitive until it is
>dry. By the way, don't use heat to dry for it will result in a loss of
>contrast. Let it dry naturally or use a fan.
>
>Bob Schramm
>
> >From: Hadi Alsegaf <halsegaf@mindspring.com>
> >Reply-To: alt-photo-process-l@sask.usask.ca
> >To: alt-photo-process-l@sask.usask.ca
> >Subject: basic question on mixing up cyanotype sensitizer
> >Date: Fri, 15 Feb 2002 10:23:58 -0500
> >
> >I bought a Mike Ware cyanotype kit from Photo Formulary and was curious
> >about making the sensitizer and light sensitivity. Specifically, at what
> >point does the formula become light sensitive? when I mix in the
>Potassium
> >Ferricyanide into the Ammonium Iron(III) Oxalate solution? Is the
>Ammonium
> >Iron(III) Oxalate solution light sensitive on it's own? Just curious.
> >Thanks
> >
> >Hadi Alsegaf
> >
>
>
>Check out my web page at:
>
> http://www.SchrammStudio.com
>
>also look at:
>
> http://www.wlsc.wvnet.edu/www/pubrel/photo.html
>
>_________________________________________________________________
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Check out my web page at:
also look at:
http://www.wlsc.wvnet.edu/www/pubrel/photo.htmlMartin
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