N°94301 · Family detail
RicohMacro·PENTAX K mount·1985
Ricoh Rikenon P 105mm F/2.8 Macro
Specifications01
MountPENTAX K
Focal length105mm
Max aperturef/2.8
TypeMacro · Telephoto · Prime
Release year1985
Weight650 g
Filter size52 mm
Min focus distance0.35 m
Max magnification1
Aperture blades8
Optical elements6
Groups6
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings + Auto Exposure setting)
Lens hoodBuilt-in telescopic round
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeMacro lens
Field Notes02
105mm prime macro lens with a maximum aperture of f/2.8 for the Pentax K mount. Intended for close-up photography and general telephoto use.
AI-assisted summary — verify against linked sourcesOther Mounts03
No alternate mounts are indexed for this family yet.