N°103586 · Family detail
RicohPortrait·PENTAX K mount·1977
Ricoh XR Rikenon 50mm F/2
Specifications01
MountPENTAX K
Focal length50mm
Max aperturef/2
TypePortrait · Prime
Release year1977
Weight190 g
Filter size52 mm
Min focus distance0.45 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
A Pentax K-mount standard prime lens with a 50mm focal length and maximum aperture of f/2. Intended for general photography including portraits and low-light use.
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Other Mounts03
No alternate mounts are indexed for this family yet.