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 Macro 50 mm f/ 2.8 used:

NameFull namePlaceScoresRank
1RichardIIIRichard Lee Fulgham Richard Lee FulghamBel Air259.1lvl.2 (Lens-Adept)
2likan 632.344lvl.3 (Lens-Competent)
3Sean TengSean Teng SeanTaipei571.951lvl.3 (Lens-Competent)