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

Sigma 30 mm f/ 1.4 DC DN C used:

NameFull namePlaceScoresRank
1kotelam Ha Noi35.25lvl.1 (Lens-Learner)
2mzagdanski MariuchKołobrzeg62.75lvl.1 (Lens-Learner)
3Enrique_Vega_PinedaEnrique Vega Enrique VegaBarcelona142.2lvl.2 (Lens-Adept)