From: Keith Gerling (keithgerling@att.net)
Date: 03/08/03-12:46:11 PM Z
Light sources differ. But given that negative density and your other
factors, I'd be using an exposure of about 5 minutes with my UV lights.
Very seldom do I ever need more than 8 minutes.
-----Original Message-----
From: Ed Buffaloe [mailto:EdBuffaloe@UnblinkingEye.Com]
Sent: Saturday, March 08, 2003 12:23 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: First Gum Print
Pre-shrunk & sized Fabriano Uno. Precoat with unpigmented gum--expose for
30 minutes under UV. Soak and clear chromium stain with sulphuric acid.
Coat with 4ml gum with 2 grams lamp black powder plus 4ml saturated solution
ammonium dichromate. Expose through 8x10 negative under UV light for 25
minutes. The negative is an 8x10 developed in a conventional developer to a
d-max of 1.26.
----- Original Message -----
From: FotoDave@aol.com
To: alt-photo-process-l@sask.usask.ca
Sent: Saturday, March 08, 2003 11:49 AM
Subject: Re: First Gum Print
Ed,
Maybe you could post the paper, formula you use, working procedure
(sizing, coating etc), exposure details, etc. It doesn't look like this is
just exposure problem alone. Sorry if you have posted that before.
Dave S
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