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

Vivitar 135 mm f/ 2.8 Auto Telephoto used:

NameFull namePlaceScoresRank
1Kevin 360.9lvl.3 (Lens-Competent)
2Facet 41lvl.1 (Lens-Learner)