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

HD Pentax-DA 18-50 mm f/ 4-5.6 DC WR RE used:

NameFull namePlaceScoresRank
1Douglas Schneider 41.1lvl.1 (Lens-Learner)