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Cosina (Cosinon) Cosina 50mm f2
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Provenance & certification

LensSeed tag4-854Serial number91308787
Scan to verify certificate LS-1062001F05CDCertificate of Provenance & ConditionLS-1062001F05CDView certificate →
Cosina (Cosinon)

Cosina 50mm f2

Pentax K50mmf/2
฿2,600Sold

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Condition assessed 25/1/2026

How we grade
Optical
4.0/5
Mechanical
4.0/5
Cosmetic
4.0/5
BVery goodWeighted across three axes

Honest disclosure

MinimalDust
NoneHaze
NoneFungus
NoneSeparation
NoneCoating marks
NoneOil on blades
90-day warranty on every lens
As-pictured (ตรงปก) guarantee
Next-day dispatch, order by 22:00
100% authentic inspected & verified
Lens heritageExact match

Cosina (Cosinon) Cosina 50mm f2

The Cosina Cosinon-S 50mm f/2 is a compact, budget standard prime in Pentax K mount, prized by tinkerers for its low cost and easy serviceability.

The history below is for this exact model — it matches the lens you’re viewing.
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Cosina (Cosinon) Cosina 50mm f2