Re: Dry Plate Speed & Shelflife

From: MARTINM <martinm@SoftHome.net>
Subject: Re: Dry Plate Speed & Shelflife
Date: Wed, 02 Mar 2005 11:32:36 +0100

> http://cabd0.tripod.com/holograms/id3.html might be easily adapted
> to purely photographic applications. Since it involves ascorbate
> reduction sensitization as well the possibility of TEA
> (triethanolamine) hypersensitization, reasonable speed might be
> expected.

What kind of speed and contrast can one get with that procedure?
Since there is no ripening or digestion step except reduction
sensitization by ascorbate, I suspect the speed would be exceedingly
low. That is to be expected for holography where the application
demands extremely high resolution. But better emulsion for still
photography can be made with a conventional way.

I sent the most stripped down emulsion formula in my notebook to a
limited circulation among several people some time ago, and as far as
I know, one tried and had good result, although his setup wasn't
anywhere near ideal.

--
Ryuji Suzuki
"Well, believing is all right, just don't let the wrong people know
what it's all about." (Bob Dylan, Need a Woman, 1982)