I have good M4/3 lenses, I bought this to try and capture some special old results achieve. no Decent lens, acceptable results across the frame, no vignetting, no aberrations, no special effects. But. The aperture ring is sloppy and lacks detent stops. It will be a little more open and almost completely closed - there will be no light. Marked are levels 1.7, 2, 2.8, 4, 5.6 and 16. No. 8 or 11. The focus ring is grainy. Neither ring has an index mark, so good luck figuring out the settings…