Here's another AR series Konica lens. I've only taken a few shots with it but I can say it is a typical Konica. It focuses easily on the Eos M3. Focus is very well dampened. Contrast is excellent at all apertures. Sharpness is excellent wide open. It is slightly sharper than its f1.8 brother. There is some minor fringing at f1.7 but is is gone by f2.8. It focuses down to a close 12 inches and is quite sharp at close range. Black and white tonality is excellent. Nice shadow detail..