Crane -- NEX-5N & Minolta MC W.Rokkor-SG 28mm f3.5
The MC W.Rokkor 28mm f3.5 reminds me of the Takumar 28mm f3.5. Both are extremely well made, and feels great in the hand. The Takumar is smaller and looks better in my opinion, not that the look matters much. In normal use, the f3.5 and f2.5 version of the W.Rokkor is almost identical, since one would normally stop it down. Both are very sharp lenses and frankly, at around f8, the difference is practically nil. The f2.5 version is a full stop faster, so if do shoot wide open often, it may be worthwhile to get the faster one. For most occasions where this lens is intended to be used, they don't make much difference. If weight is an important issue, you may like the f3.5 version better.
Walk in the snow -- NEX-5N & Minolta MC W.Rokkor-SG 28mm f3.5