Re: gum bichromate
Virginia Boehm (gini@ix.netcom.com)
Sat, 10 Jun 1995 04:55:04 -0700
>
>I've found exposure times radically longer than seconds, e.g.,
>minutes (5-10) in sunlight at mid-afternoon. This is with a saturated
>dichromate solution. Are there hidden variables here, or am I just
>living further from the sun?
>
> Dan
>
Those are my exposure times too in the spring and fall or early morning
or very late afternoon in the summer. But summer midday sun is fierce
stuff, and exposures under a minute not uncommon. As for winter, even
at mid day it takes forever and to me the color saturation seems to
fall off even then.
Gini