Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
RicohRikenon P 28-80mm F/3.5-5.6 Macro	PENTAX K	Macro	—	28-80mm	f/3.5	—
RicohRikenon P 28mm F/2.8	PENTAX K	Wide	1984	28mm	f/2.8	200g
RicohRikenon P 28mm F/2.8 Macro	PENTAX K	Macro	1991	28mm	f/2.8	155g
RicohRikenon P 35-135mm F/3.5-4.5 Macro	PENTAX K	Macro	1988	35-135mm	f/3.5	—
RicohRikenon P 35-200mm F/4-5.6 Macro	PENTAX K	Macro	—	35-200mm	f/4	—
RicohRikenon P 35-70mm F/3.4-4.5 Macro	PENTAX K	Macro	1985	35-70mm	f/3.4	—
RicohRikenon P 35-70mm F/3.5-5.6 Macro	PENTAX K	Macro	—	35-70mm	f/3.5	—
RicohRikenon P 35mm F/2.8	PENTAX K	Wide	1984	35mm	f/2.8	150g
RicohRikenon P 50mm F/1.4	PENTAX K	Portrait	1985	50mm	f/1.4	250g
RicohRikenon P 50mm F/1.7	PENTAX K	Portrait	1984	50mm	f/1.7	153g
RicohRikenon P 50mm F/1.7 Gold	PENTAX K	Portrait	—	50mm	f/1.7	—
RicohRikenon P 50mm F/2	PENTAX K	Portrait	1984	50mm	f/2	135g
RicohRikenon P 55mm F/1.2	PENTAX K	Portrait	—	55mm	f/1.2	—
RicohRikenon P 60-300mm F/4-5.6 Macro	PENTAX K	Macro	1991	60-300mm	f/4	—
RicohRikenon P 70-210mm F/3.9	PENTAX K	Zoom	1985	70-210mm	f/3.9	—
RicohRikenon P 70-210mm F/3.9 Macro	PENTAX K	Macro	1996	70-210mm	f/3.9	—
RicohRikenon P 70-210mm F/4.5-5.6 Macro	PENTAX K	Macro	—	70-210mm	f/4.5	—
RicohRikenon P 70-300mm F/4.5-5.8	PENTAX K	Zoom	1988	70-300mm	f/4.5	—
RicohRikenon P 70-300mm F/4.5-5.8 Macro	PENTAX K	Macro	—	70-300mm	f/4.5	—
RicohXR Rikenon 135mm F/2.8	PENTAX K	Telephoto	1977	135mm	f/2.8	440g
RicohXR Rikenon 16mm F/2.8 Fisheye	PENTAX K	Fisheye	1982	16mm	f/2.8	300g
RicohXR Rikenon 18mm F/2.8	PENTAX K	Wide	1982	18mm	f/2.8	348g
RicohXR Rikenon 200mm F/4	PENTAX K	Telephoto	1978	200mm	f/4	405g
RicohXR Rikenon 200mm F/4 [I]	PENTAX K	Telephoto	1977	200mm	f/4	405g
RicohXR Rikenon 200mm F/4 [II]	PENTAX K	Telephoto	1980	200mm	f/4	620g
RicohXR Rikenon 24mm F/2.8	PENTAX K	Wide	1982	24mm	f/2.8	210g
RicohXR Rikenon 28mm F/2.8	PENTAX K	Wide	1977	28mm	f/2.8	190g
RicohXR Rikenon 28mm F/3.5	PENTAX K	Wide	1977	28mm	f/3.5	190g