Sort By: Post Date | Title | Publish Date
Filed under
Rainer Wenzl Posted: Apr 01, 2006 0 comments

Over 200 years ago, scientists and photographers experimented with light-sensitive chemicals and developed a photographic printing process that utilizes watercolor paper coated with a base of gum arabic solution with dichromate salt and pigment. This solution, when exposed to sunlight, becomes insoluble and is able to withstand the test of time.

This photographic...

Enter your Shutterbug username.
Enter the password that accompanies your username.