Can anybody point me to a chart for reciprocity failure for Kodak Tmax & Tri-X films? The Kodak film book only covers metered times of 100 seconds and less. I realize I'm going to have to run tests, but was wondering if there is a good set of starting points for the longer times. Also: how do filters alter the equation, in general?

-- Erik Ryberg (pfw@cyberhighway.net), February 14, 1998

Answers

Erik, Check out Steve Simmons' view camera book. He's got a pretty comprehensive set of reciprocity charts for all kinds and brands of films, particularly for longer exposure times. Some good info on filters too.

-- Sergio Ortega (s.ortega@worldnet.att.net), March 31, 1998.