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

SMC Pentax-A 70-210 mm f/ 4 used:

NameFull namePlaceScoresRank
1Light Cian Yekaterinburg24.55lvl.1 (Lens-Learner)
2Gregoire Hostettler 23.5lvl.1 (Lens-Learner)
3andreasde 12.5lvl.1 (Lens-Learner)
4Sean TengSean Teng SeanTaipei571.951lvl.3 (Lens-Competent)