All About Photographic Lenses.
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Porst Color Reflex Auto 50 mm f/ 1.7 used:

NameFull namePlaceScoresRank
1Radovan RadovanZagreb2219.35lvl.4 (Lens-Pro)
2vilipino 25lvl.1 (Lens-Learner)
3Martin Moravec 4.9lvl.1 (Lens-Learner)
4Fatrai 49.7998lvl.1 (Lens-Learner)
5Tom_GERTom Andernach1554.33lvl.4 (Lens-Pro)