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

Sigma AF 100-300 mm f/ 4.5-6.7 DL used:

NameFull namePlaceScoresRank
1Chris Eichenberg 25.85lvl.1 (Lens-Learner)
2Orlando 36lvl.1 (Lens-Learner)
3margo 56lvl.1 (Lens-Learner)
4Ben Simo Arizona268.7lvl.2 (Lens-Adept)