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

7artisans 7.5 mm f/ 2.8 used:

NameFull namePlaceScoresRank
1dgrmkrp 211.501lvl.2 (Lens-Adept)
2James HeilJames HeilAugusta, Maine270.501lvl.2 (Lens-Adept)