using a Jobo 3010, I took advantage of sheet film and ran through an experiment, to evaluate TMax 100, Delta 100, Plus-X, and FP-4. realizing the suggested Xtol processing times were different, I selected a good compromised developing duration, and exposed all films on the same scene. I was quite surprised, and it is consistent, that TMax 100 yields the lowest speed of these films. appears to be about a stop difference between TMax 100 and Delta 100, which should be close. having said that, the processing times actually tend to overdevelop TMax, so this is a mystery. Plus-X, FP-4, and Delta 100 densities match well, whereas TMax 100 stands alone.(posted 9047 days ago)I was very pleased with TMX in 35mm, such that I am surprised by these findings. Delta 100 is beautiful, but not quite as sharp as TMX.
does this bear out the conventional wisdom?