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Cosina (Cosinon) Cosina 50mm f2
AB
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Provenance & certification

LensSeed tag7-262Serial number90306650
Scan to verify certificate LS-3F88EF4A35F7Certificate of Provenance & ConditionLS-3F88EF4A35F7View certificate →
Cosina (Cosinon)

Cosina 50mm f2

Pentax K50mmf/2
฿2,544Sold

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Condition assessed 25/1/2026

How we grade
Optical
5.0/5
Mechanical
5.0/5
Cosmetic
4.0/5
ABExcellentWeighted 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