N°98230 · Family detail
RicohFisheye·PENTAX K mount·1982
Ricoh XR Rikenon 16mm F/2.8 Fisheye
Specifications01
MountPENTAX K
Focal length16mm
Max aperturef/2.8
TypeFisheye · Wide · Prime
Release year1982
Weight300 g
Min focus distance0.15 m
Aperture blades6
Optical elements9
Groups8
AutofocusNo
StabilizationNo
Aperture controlAperture ring (Manual settings only)
Lens hoodBuilt-in petal-shaped
EraFilm era
Production statusDiscontinued
Additional Info02
Lens TypeFisheye lens
Field Notes02
Ricoh XR Rikenon 16mm F/2.8 is a fixed 16mm fisheye prime for the Pentax K mount, offering an f/2.8 maximum aperture. Intended for very wide, distorted creative effects and low-light use.
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Other Mounts03
No alternate mounts are indexed for this family yet.