Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
BelOMOPeleng A 17mm F/2.8 Fisheye MC	T MOUNT	Fisheye	—	17mm	f/2.8	630g
BelOMOPeleng A 8mm F/3.5 Fisheye MC	T MOUNT	Fisheye	—	8mm	f/3.5	400g
Celestron300mm F/5.6 Mirror	T MOUNT	Mirror	1981	300mm	f/5.6	260g
Celestron500mm F/8 Mirror MC	T MOUNT	Mirror	—	500mm	f/8	400g
Celestron500mm F/8 Mirror Multi-Coated	T MOUNT	Mirror	—	500mm	f/8	400g
Chinon500mm F/8 Mirror	T MOUNT	Mirror	—	500mm	f/8	500g
Hanimar35mm F/3.5	T MOUNT	Wide	—	35mm	f/3.5	213g
Hanimex300mm F/5.6 Mirror	T MOUNT	Mirror	—	300mm	f/5.6	300g
Itorex50mm F/40 Pan Focus	T MOUNT	Prime	—	50mm	f/40	60g
Jupiter-21A 200mm F/4	T MOUNT	Telephoto	1968	200mm	f/4	740g
Jupiter-37A 135mm F/3.5	T MOUNT	Telephoto	—	135mm	f/3.5	410g
Jupiter-37A 135mm F/3.5 [MC]	T MOUNT	Telephoto	—	135mm	f/3.5	410g
Kalimar300mm F/5.6 Mirror	T MOUNT	Mirror	—	300mm	f/5.6	207g
Kelda500mm F/6.3 Mirror DX	T MOUNT	Mirror	—	500mm	f/6.3	597g
Kenko35mm F/4 Soft MC	T MOUNT	Wide	1996	35mm	f/4	—
Kenko400mm F/8 Mirror MC	T MOUNT	Mirror	2012	400mm	f/8	340g
Kenko400mm F/8 Mirror MC N II	T MOUNT	Mirror	2017	400mm	f/8	500g
Kenko400mm F/8 Mirror MC N II S	T MOUNT	Mirror	2021	400mm	f/8	500g
Kenko45mm F/4.5 Soft MC	T MOUNT	Prime	1995	45mm	f/4.5	210g
Kenko85mm F/2.5 Soft MC	T MOUNT	Telephoto	1987	85mm	f/2.5	340g
KenkoMIL TOL 200mm F/4	T MOUNT	Telephoto	2015	200mm	f/4	670g
KenkoMIL TOL 400mm F/6.7 ED	T MOUNT	Telephoto	2015	400mm	f/6.7	1560g
KenkoMIL TOL 400mm F/8 Mirror MC	T MOUNT	Mirror	2012	400mm	f/8	340g
KiyoharaKogaku 50mm F/4.5 Soft	T MOUNT	Prime	1987	50mm	f/4.5	125g
KiyoharaKogaku 50mm F/4.5 Soft [VK50R]	T MOUNT	Prime	1987	50mm	f/4.5	125g
KiyoharaKogaku 70mm F/5 Soft	T MOUNT	Prime	1986	70mm	f/5	136g
KiyoharaKogaku 70mm F/5 Soft [VK70R]	T MOUNT	Prime	1986	70mm	f/5	136g
KyoeiW. ACALL 35mm F/3.5	T MOUNT	Wide	—	35mm	f/3.5	—