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 100 mm f/ 2.8 used:

NameFull namePlaceScoresRank
1andreasde 12.5lvl.1 (Lens-Learner)
2Grosbill01 Paris49.9lvl.1 (Lens-Learner)
3likan 632.344lvl.3 (Lens-Competent)