From: Judy Seigel (jseigel@panix.com)
Date: 06/18/00-04:33:25 PM Z
I've found a very distinct color shift from heat on VDB, always, in fact
that's been a good reason for not ironing or drymount pressing, because it
darkens the color, and IMO makes it browner, duller, less appealing. I'll
add however, that I also find color shifts on VDB from almost everything
-- for instance a heavier coating, a second coat, a slight wait before
exposing -- or something, or nothing, else.
There's also the fact that if you expect some touch of heat on the print,
better to do all of a piece and evenly so as not to have waves or
blotches.
Judy
On Sun, 18 Jun 2000 Smieglitz@aol.com wrote:
>
> In a message dated 06/18/2000 10:19:49, you wrote:
>
> <<So, is the consensus that there should be no color variation from one light
> source to another?>>
>
> Heat can cause a color variation (or so I've read). Flattening a VDB in a
> drymount press or drying with hot air apparently can shift the color more
> neutral. So, if you are printing under a hot UV source, i.e., direct sun,
> (and especially overexposing as you note) the contact frame/glass/print could
> heat up enough to cause a color shift.
>
> I've only noticed this effect a couple of times with prints coming from a
> drymount press...a very slight shift. I think the major variation in color
> has to do with humidity and paper choice, seen many times.
>
> Joe
>
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