i own the lens....it is ok...not the best...maybe i am spoiled by the rollei 40mm schneider....this lens reminds me a little bit of the canon WAs (not quite as bad) it could be better...sharpness is good, there is CA and some distortions...i guess normal for a WA? for the price and the fact that it is a 35mm....it is a no-brainer....
waiting to see what the 28 can do...