All About Photographic Lenses.
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Porst Color Reflex D 50 mm f/ 1.9 used:

NameFull namePlaceScoresRank
1pierluc 11.9lvl.1 (Lens-Learner)
2Eleftherios Trypas 9lvl.1 (Lens-Learner)
3feesa Jürgen117.75lvl.2 (Lens-Adept)