Click on the images to see them larger. So I conducted a little informal side by side with my various 50's. The players were as follows (from left to right)... 1. Minolta MC 50/1.7 2. Super Takumar 50/1.4 (not the SMC version) 3. Olympus Pen-F 40/1.4 4. Hexanon 40/1.8 5. Hexanon 50/1.4 (EE version) 6. Canon FD 50/1.4 7. Helios 44M 58/2 8/ Minolta MC 50/1.4 There is nothing scientific about it. I simply sat in the chair at my computer and shot the light switch on the wall. Each lens was set a f4, the light was terrible and the Auto ISO went to 3200. That said, it does show how these various lenses perform in less than optimal conditions. The lens all perform pretty well. The Canon and the Pen F are cooler in color where all the other lenses tend to be a bit warm. The Sharpest is the Konica 50/1.4 followed by the Super Takumar 50/1.4 and Minolta 50/1.4. I plan to do another one with a well lit subject and a tripod.