N°97716 · Family detail
RicohMacro·PENTAX K mount·1981
Ricoh XR Rikenon 70-150mm F/4 Macro
Specifications01
MountPENTAX K
Focal length70-150mm
Max aperturef/4
TypeMacro · Zoom
Release year1981
Weight465 g
Filter size52 mm
Min focus distance1.5 m
Aperture blades8
Optical elements13
Groups10
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in telescopic round
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeTelephoto zoom lens
Summary02
Ricoh XR Rikenon 70–150mm F/4 is a Pentax K-mount zoom lens with a constant maximum aperture of f/4. It’s intended for general telephoto use with macro close-focusing capability.
AI-assisted summary — verify against linked sourcesWhere can this lens be adapted?
The Pentax K mount has a flange distance of 45.46 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work
- Pentax DA and FA J lenses have no aperture ring. Use an adapter with its own aperture control.
- Pentax DA lenses are made for APS-C.
- Sony EAdapter · 27.46 mm
- Canon RFAdapter · 25.46 mm
- Nikon ZAdapter · 29.46 mm
- Fujifilm XAdapter · 27.76 mm
- L-MountAdapter · 25.46 mm
- Micro Four ThirdsAdapter · 26.21 mm
- Fujifilm G (GFX)Adapter · 18.76 mm
- Canon EF-MAdapter · 27.46 mm
- Canon EFAdapter · 1.46 mm
A rear element that sticks out can hit the camera mirror.
No plain adapter reaches infinity focus on: Nikon F.
Other Mounts03
No alternate mounts are indexed for this family yet.