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

Porst WW-Macro 28 mm f/ 2.8 X-M GMC used:

NameFull namePlaceScoresRank
1pierluc 11.9lvl.1 (Lens-Learner)
2Aravier BatizAravier Batiz Santa Monica, California.175.8lvl.2 (Lens-Adept)