RE: sun vs. UV lights in cyanotype

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From: Martin Reis (mreis@tafelmusik.org)
Date: 01/30/03-09:31:46 AM Z

I agree, Judy. I have made cyanos which took up to 3 days to expose
properly (plant cuttings) But even with a regular negative the less
UV and/or sunlight the more 'engraved' or perhaps 'grainy' the final print.
Fascinating.

Martino

-----Original Message-----
From: Judy Seigel [mailto:jseigel@panix.com]
Sent: Wednesday, January 29, 2003 16:50
To: alt-photo-process-l@sask.usask.ca
Subject: Re: sun vs. UV lights in cyanotype

On Wed, 29 Jan 2003, Tom Ferguson wrote:

> Just a "me too" to Sandy's post. In my experience sunlight is more
> contrasty than UV tubes.
>
> I strongly suspect that a correctly developed neg for each situation
> will make a virtually identical image.

But is it really possible to generalize about sunlight? Maybe in Montana
it's all the same??? But down here it comes at radically different angles
depending on season & I would ASSUME that the angle would affect the rays
that get through, as of course would what's in the air that day... ?

J. 

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