I believe on a practical level TMX and Delta 100 are pretty much equivalent. By "practical level" I mean that most likely other factors such as mechanical tolerances, focusing accuracy etc will make a far greater difference in results than any difference in RP between the two films.(posted 8444 days ago)I think Delta 100 may have a little higher acutance, but that's just my impression in pictorial usage; I haven't tried to test that in any way.