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

Sigma 70-200 mm f/ 2.8 EX APO DG HSM used:

NameFull namePlaceScoresRank
1Flicker VadimMoscow211.249lvl.2 (Lens-Adept)
2Michel Noach 17.8lvl.1 (Lens-Learner)
3Carstor 59lvl.1 (Lens-Learner)
4margo 56lvl.1 (Lens-Learner)