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

Sigma 18-250 mm f/ 3.5-6.3 DC Macro OS HSM used:

NameFull namePlaceScoresRank
1filube 13.5lvl.1 (Lens-Learner)