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

Sigma AF 300-800 mm f/ 5.6 APO EX DG HSM used:

NameFull namePlaceScoresRank
1Selby Jones 6.3lvl.1 (Lens-Learner)