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

Sigma MC 75-210 mm f/ 3.5-4.5 used:

NameFull namePlaceScoresRank
1drpeters Louisville, KY202.8lvl.2 (Lens-Adept)
2Ivanzegt 83.8lvl.1 (Lens-Learner)
3Aravier BatizAravier Batiz Santa Monica, California.170.5lvl.2 (Lens-Adept)