B
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Provenance & certification
LensSeed tag7-307Serial number770507
Rikenon
Rikenon 28mm f2.8
M4228mmf/2.8
฿3,000Sold
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Condition assessed 20/1/2026
How we gradeOptical
4.0/5Mechanical
4.0/5Cosmetic
4.0/5B
Honest disclosure
MinimalDust
NoneHaze
NoneFungus
NoneSeparation
NoneCoating marks
NoneOil on blades
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Lens heritageExact match
Rikenon 28mm f2.8
The Ricoh Rikenon P 28mm f/2.8 is a compact manual-focus wide-angle prime released around 1984, praised for excellent sharpness and value despite noticeable barrel distortion.
The history below is for this exact model — it matches the lens you’re viewing.
Introduced
1984
Optical formula
7 elements in 7 groups
Signature
Neutral color rendition with smooth, gentle color gradation.
