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

Sigma AF 18-50 mm f/ 2.8 EX DC D used:

NameFull namePlaceScoresRank
1sart 60.6001lvl.1 (Lens-Learner)
2Per Borjars 60lvl.1 (Lens-Learner)
3Morten Enevoldsen 4.6lvl.1 (Lens-Learner)