Collodion Chloride Printing Out Paper (POP) / by Ron Cowie

  • This is my favorite silver process because of all the variation I can get with toning. I took a workshop at the George Eastman House with Mark Osterman.

  • I can print by inspection which allows me to really dial in the exposure time.

  • I can make the emulsion myself. Recipe is fairly simple.

  • Toning is made either with gold or platinum solutions. The concentrations are pretty small which also makes the prints very archival.

  • Exposure times are between five and fifteen minutes (depending on the negative density)