U of S | Mailing List Archive | alt-photo-process-l | RE: First tricolor gum

RE: First tricolor gum

Ditto, congrats and welcome...

Note: You can switch to phtalo blue instead of prussian, it's (usually) a
very strong colorant and it's transparent too...


From: Keith Gerling [mailto:keith.gerling@gmail.com] 
Sent: Thursday, July 02, 2009 5:42 AM
To: alt-photo-process-l@usask.ca
Subject: Re: First tricolor gum

Great first attempt. 

On Wed, Jul 1, 2009 at 7:55 PM, Paul Viapiano <viapiano@pacbell.net> wrote:

	OK, I tried a tricolor gum today with the intent of getting true
color. Using 1:1 gum/dichromate ratios and sun exposures of 3 minutes and
30-60 minute development, I ended up with this:
	My guess is that I'm not putting enough pigment in my
mixes...especially the blue pigment.
	I used Prussian Blue, Warm Sepia, and Anthraquinoid Red...all Daniel
Smith watercolors.