Just playing around with four lenses. Nothing definitive, just playing around. Below is a shot from some of my tests. All shots were at f/5.6. From top light, then clockwise, they are: SuperTakumer m43 mount 50/1.4 at 5.6 (upper left) OM 50mm macro 2.0 at 5.6 (upper right) Olympus 14-42 Kit lens at 5.6 (lower left) Olympus 14-150 super zoom at 5.4 (lower right) I actually tested five lenses, but I missed focus with my Rokkor. Judging from what I could see, the Rokkor likely was just a bit behind the Takumar and the OM. My take is that the SuperTak was the best by a hair (I should redo this screen shot. In the screen shot, they look tied). I thought the OM would have beaten it. I might do some more testing just to see. The kit (which I've stopped using since getting the 14-150) is clearly the weakest, but the 14-150 isn't bad, given what it is. Like I said -- just for fun.