Originally posted by iheiramo I love my M's
M28/3.5: 50€
Very good price for a nice lens that sits very close to the top in Pentax 28mm's rankings.
Your pic shows that.
It's one of the M lenses I sold back in the eighties to buy faster (or "A" enabled) alternatives.
Shot at its sweet spot it's as good, or maybe even a tad sharper, than the expensive 2/28mm "Hollywood" that replaced it in my kit back then.
Of course the Zeiss-designed 2/28mm is faster, and provides better bokeh and optimal performance at close range, but the huge difference in price does not correspond to a similar difference in performance, IQ wise.
On average M lenses have a great price/performance ratio, and are solidly built without being heavy or bulky.
IMO the best ones are the two faster fifties, then 4/20mm, 3.5/28mm, 2/85mm, 2.8/100mm. Plus the 300mm Star.
These are the best, among those I own/owned.
I'm sure there are others, but I haven't tried them, so I can't express any personal opinion.