I have some scanned prints that were made at the same place from similar quality 200 asa film negs. One is the one I posted earlier from the Olympus (steam loco). The others are zeiss 1.7 with tripod, Yashica ML 1.9 and Canon 100mm f2.8. I scanned them on the same settings on the same scanner to compare. Can you tell which is which apart from the Olympus which I'm sure isn't quite so good?