My 2 cents worth - I think the 43 mm f1.9 is great, the 50 mm f2.8 macro is very good close up but less so at infinity, I do not regard this as a general purpose lens. I have also been impressed by late screw-mount lenses, I used to use 28 mm f3.5 and 35 mm f3.5 on a Bessa L via an adapter (couldn't find a Pentax screw body without vibration problems).