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

Super-Multi-Coated Takumar 150 mm f/ 4 used:

NameFull namePlaceScoresRank
1ThorstenP N157.35lvl.1 (Lens-Learner)
2gverdon 150.3lvl.2 (Lens-Adept)
3Greg SellDoc GunsmokeDodge City344.401lvl.3 (Lens-Competent)