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

Carl Zeiss Jena Sonnar 50 mm f/ 1.5 used:

NameFull namePlaceScoresRank
1stimilek Vlastimil1491.48lvl.4 (Lens-Pro)
2Jorge LunaJ Buenos Aires27lvl.1 (Lens-Learner)