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

Sigma 50mm f/1.4 DG HSM Art used:

NameFull namePlaceScoresRank
1Kevin Macy 394.449lvl.3 (Lens-Competent)
2Gunther Hoser 7.9lvl.1 (Lens-Learner)