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

Helios-94 50 mm f/ 1.8 used:

NameFull namePlaceScoresRank
1VeerdAndreyev VladimirUst-Kamenogorsk4826.81lvl.5 (Lens-Expert)