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

Pentax SMC 135mm f/3.5 used:

NameFull namePlaceScoresRank
1Tristen Hopp 20.9lvl.1 (Lens-Learner)
2Sean TengSean Teng SeanTaipei571.951lvl.3 (Lens-Competent)
3cycleuser 7.3lvl.1 (Lens-Learner)