Cor Breukel (cor@ruly46.medfac.leidenuniv.nl)
Wed, 17 Nov 1999 15:46:28 +0100 (MET)
Thanks for the fedback, Carl,
But I do not time the drying time exactly (anymore),I should have
mentioned that. I do just as you describe..test the feeling of the
paper..it takes about 2 minutes roughly..so it seems to boil down to the
relative humidity, last monday was indeed for Holland an rare dry day.
Amazing what different colour it gives! It is not that the warm brown is
an unplesant colour, just that it wasn't suitable for each image. Also
the brown colour seems to have a lower Dmax
Cor Breukel
http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
On Wed, 17 Nov 1999, Carl Weese wrote:
> Cor,
>
> Humidity is almost certainly the answer. For the zia one-step drying
> method, you should not _time_ the drying, you do it by observation and
> feel. Even small ambient humidity differences will affect color,
> contrast, and exposure duration if you dry for a set time period. But
> it's easy to get quite consistent results if you learn to judge the
> dryness of the paper directly instead of relying on a timer.
>
> The size of the print drastically affects drying time too: an 8x10 made
> immediately after a 4x5 in the same room will take much longer to
> prepare, but will match closely in color and tone if you do each by
> feel.
>
> ---Carl
>
> PS: Just read Jeff's note and I agree, control of ambient humidity makes
> things a lot easier. Anything from around 50% to 70% is easy to deal
> with, at least making moderate size prints, but higher or lower room
> humidity will cause trouble. But the key is to learn what a properly
> dried sheet feels like instead of trying to time it.
>
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