I second all of Michael Frasier's recommendations. I have wasted more film, time, and good shots trying to make Tech Pan work than it could ever be worth. Plus, if you insist on using Tech Pan, PMK is not the best developer to use with it.(posted 9073 days ago)David Kachel has evolved a technique of exposing Tech Pan more or less normally, then placing it in a very dilute reducer BEFORE development, which will give a normal tonal range. I have a little information on this technique (and references to his original articles in Darkroom Techniques) in an article on Latent Image Bleaching at http://unblinkingeye.com. However, in my own experience, it isn't worth the effort. I prefer Pan F for ease of use.