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Provenance & certification
LensSeed tag7-003Serial number81887
Rikenon
Rikenon 135mm f2.8
M42135mmf/2.8
฿3,150Sold
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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
90-day warranty on every lens
As-pictured (ตรงปก) guarantee
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100% authentic inspected & verified
Lens heritageExact match
Rikenon 135mm f2.8
The Rikenon 135mm f/2.8 is an underrated, superbly built budget telephoto by Ricoh, available in an M42 Auto version and a later Pentax K-mount XR version, delivering strong sharpness and pleasing bokeh for very little money.
The history below is for this exact model — it matches the lens you’re viewing.
Optical formula
4 elements in 4 groups (XR K-mount version; M42 Auto version unknown)
Signature
Renders slightly cool compared to Pentax SMC lenses, easily corrected in raw.
