N°103584 · Family detail
RicohPortrait·PENTAX K mount·1981
Ricoh Rikenon 50mm F/2
Specifications01
MountPENTAX K
Focal length50mm
Max aperturef/2
TypePortrait · Prime
Release year1981
Weight135 g
Filter size52 mm
Min focus distance0.6 m
Aperture blades6
Optical elements6
Groups5
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeStandard prime lens
Field Notes02
Ricoh Rikenon 50mm f/2 is a standard prime lens for the Pentax K mount, intended for general-purpose photography with a fast f/2 aperture for low-light and shallow depth of field.
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Other Mounts03
No alternate mounts are indexed for this family yet.