Re: sensitizing for carbon

Pollmeier Klaus (100561.2417@CompuServe.COM)
28 Nov 96 16:36:36 EST

Al,
our two mails crossed: The way you work is fine - I often work the same way but
use rubbing alcohol instead of acetone - and if you use the tissue right after
sensitizing, you'll never have a problem with fog. The ammonia is just to make
the paper slower so it won't fog even if you had to wait (or sleep) for some
hours before you have the opportunity to use it. E.g. I noticed a considerable
gain in speed when I made ten prints from the same neg for which I had prepared
the tissue at the same time: the last prints were a little darker, so I had to
shorten exposure time about 10-20% after 2-3 hours. With ammonia this effect
would have been much less.

BTW: The only problem I had with brayer-sensitizing: Sometimes the very bright
highlights loose contact during development and flake off. This is never the
case with the soaking method. Did you notice that, too?

Klaus