Did anybody tried these two lenses ? Are they any good ?
Fisheye MC Zenitar-K (Pentax) 16mm f/2.8 MC Mir-47 Pentax K 2.5/20 Lens
I've got the MC Mir - there's a lengthy review of it by me somewhere in the list archives (back in February I think?). The short version: not a small lens, and very soft, even stopped down. Distortion and other aberrations were well controlled. Flare wasn't. Excellent value for money though - there aren't that many wide aperture super-wide-angle lenses out there! Contrary to my findings, other people have reported the lens to be very sharp - I *think* I've worked this one out: on many Pentax bodies (certainly M series bodies, with their large, high-magnification viewfinders) using the rear-element filters blocks the mirror, so I've been using the lens without them. However, they are not plain glass - they're slightly concave; I plan to extend the mount out a little (losing true infinity focus, but that's not necessarily a problem with 20mm-lens depths of field) and see if that helps.
S
