Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
RicohXR Rikenon 300mm F/4.5 APO	PENTAX K	Telephoto	1982	300mm	f/4.5	1050g
RicohXR Rikenon 35-70mm F/3.5 Macro	PENTAX K	Macro	1981	35-70mm	f/3.5	345g
RicohXR RIKENON 35mm F/2.8	PENTAX K	Wide	1977	35mm	f/2.8	190g
RicohXR Rikenon 35mm F/2.8 [I]	PENTAX K	Wide	1977	35mm	f/2.8	190g
RicohXR Rikenon 35mm F/2.8 [II]	PENTAX K	Wide	1980	35mm	f/2.8	240g
RicohXR Rikenon 45mm F/2.8	PENTAX K	Prime	1994	45mm	f/2.8	52g
RicohXR Rikenon 50mm F/1.4	PENTAX K	Portrait	1977	50mm	f/1.4	260g
RicohXR Rikenon 50mm F/1.7	PENTAX K	Portrait	1977	50mm	f/1.7	210g
RicohXR Rikenon 50mm F/1.7 [I]	PENTAX K	Portrait	1977	50mm	f/1.7	210g
RicohXR Rikenon 50mm F/1.7 [II]	PENTAX K	Portrait	1981	50mm	f/1.7	153g
RicohXR Rikenon 50mm F/2	PENTAX K	Portrait	1977	50mm	f/2	190g
RicohXR Rikenon 50mm F/2 L	PENTAX K	Portrait	1980	50mm	f/2	170g
RicohXR Rikenon 50mm F/2 S	PENTAX K	Portrait	1981	50mm	f/2	140g
RicohXR Rikenon 55mm F/1.2	PENTAX K	Portrait	1996	55mm	f/1.2	312g
RicohXR Rikenon 55mm F/1.7	PENTAX K	Portrait	—	55mm	f/1.7	150g
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
SamsungD-Xenon 10-17mm F/3.5-4.5 Fisheye	PENTAX K	Fisheye	—	10-17mm	f/3.5	320g
SamsungD-Xenon 100mm F/2.8 Macro	PENTAX K	Macro	—	100mm	f/2.8	345g
SamsungD-Xenon 12-24mm F/4 ED	PENTAX K	Wide	—	12-24mm	f/4	430g
SamsungD-Xenon 18-250mm F/3.5-6.3	PENTAX K	Zoom	—	18-250mm	f/3.5	455g
SamsungD-Xenon 18-55mm F/3.5-5.6	PENTAX K	Zoom	—	18-55mm	f/3.5	225g
SamsungD-Xenon 35mm F/2 AL	PENTAX K	Wide	—	35mm	f/2	195g
SamsungD-Xenon 50-200 F/4-5.6 ED	PENTAX K	Zoom	—	50-200mm	f/4	255g
SigmaART DG HSM 35mm F/1.4	PENTAX K	Wide	—	35mm	f/1.4	665g
Venus OpticsLaowa 12mm F/2.8 Zero-D	PENTAX K	Wide	2016	12mm	f/2.8	609g