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 6x7 105 mm f/ 2.4 used:

NameFull namePlaceScoresRank
1Datuar 109.45lvl.2 (Lens-Adept)
2Sean TengSean Teng SeanTaipei571.951lvl.3 (Lens-Competent)