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

3M-6A 500 mm f/ 6.3 used:

NameFull namePlaceScoresRank
1Jandy Michal JandoraVsetín129.65lvl.2 (Lens-Adept)
2Rob T LetsViewThisSpringfield123.6lvl.2 (Lens-Adept)
3Tolosano Toulouse204.102lvl.2 (Lens-Adept)