Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
RicohXR Rikenon 55mm F/2.2	PENTAX K	Prime	1980	55mm	f/2.2	140g
RicohXR Rikenon 70-150mm F/3.5 Macro	PENTAX K	Macro	1977	70-150mm	f/3.5	735g
RicohXR Rikenon 70-150mm F/4 Macro	PENTAX K	Macro	1981	70-150mm	f/4	465g
RicohXR Rikenon Reflex 600mm F/8	PENTAX K	Mirror	1982	600mm	f/8	751g
RicohAF Rikenon 50mm F/2	PENTAX K	Portrait	—	50mm	f/2	—
RicohRikenon 24mm F/2.8	M42	Wide	—	24mm	f/2.8	—
RicohRikenon P 28-110mm F/2.8-3.8 Macro	PENTAX K	Macro	—	28-110mm	f/2.8	—
RicohRikenon P 28-200mm F/3.5-5.3 Macro	PENTAX K	Macro	—	28-200mm	f/3.5	—
RicohRikenon P 28-70mm F/2.8-4 Macro	PENTAX K	Macro	—	28-70mm	f/2.8	—
RicohRikenon P 28-70mm F/3.5-4.5 S	PENTAX K	Zoom	—	28-70mm	f/3.5	—
RicohRikenon P 70-210mm F/4-5.6 Macro	PENTAX K	Macro	—	70-210mm	f/4	—
RicohRikenon P Zoom 28-100mm F/4 Macro	PENTAX K	Macro	—	28-100mm	f/4	—
RicohRikenon P Zoom 35-200mm F/4-5.6 Macro	PENTAX K	Macro	—	35-200mm	f/4	—
RicohRikenon P Zoom 35-70mm F/3.4-4.5 Macro	PENTAX K	Macro	—	35-70mm	f/3.4	—
RicohRikenon P Zoom 35-70mm F/3.5-4.5 Macro	PENTAX K	Macro	—	35-70mm	f/3.5	—
RicohXR Rikenon 50mm F/2 L / S	PENTAX K	Portrait	—	50mm	f/2	—
RicohXR Rikenon 70-150mm F/3.5	PENTAX K	Zoom	—	70-150mm	f/3.5	—