All About Photographic Lenses.
Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.

Macro-Takumar 50 mm f/ 4 used:

NameFull namePlaceScoresRank
1Leo Koikov 537.749lvl.3 (Lens-Competent)
2Massimo 53.3lvl.1 (Lens-Learner)
3Greg SellDoc GunsmokeDodge City344.401lvl.3 (Lens-Competent)