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

Tair-8 500 mm f/ 4.5 used:

NameFull namePlaceScoresRank
1Dima Belan 179.4lvl.2 (Lens-Adept)