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

Sigma AF 70 mm f/ 2.8 EX DG Macro used:

NameFull namePlaceScoresRank
1hk12 98.65lvl.1 (Lens-Learner)
2jutuiz 16.9lvl.1 (Lens-Learner)
3StevenSteven James 曾杰 Steven JamesTaipei191.9lvl.2 (Lens-Adept)
4Per Borjars 60lvl.1 (Lens-Learner)
5Eric13 378.4lvl.3 (Lens-Competent)