I have used Kodak's SD-1 (pyro) for 35mm and like it very well and there is a noticible differnce in the neg's between standard (non-pyro) and pyro neg's, anyone who tells you otherwise has never used pyro or did not know what they were doing with it. I gave up condenser light about 6 years ago for a Zone VI cold light head for my Omega D2V along with a compensating timer and have never regretted it. Welcome back to B/W. Regards, Pat(posted 8825 days ago)