Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
Mamiya-Sekor C 55mm F/2.8 N	MAMIYA 645	Prime	—	55mm	f/2.8	305g
Mamiya-Sekor C 55mm F/2.8 S	MAMIYA 645	Prime	1981	55mm	f/2.8	333g
Mamiya-Sekor C 65mm F/4.5	MAMIYA RB67	Prime	1974	65mm	f/4.5	835g
Mamiya-Sekor C 70mm F/2.8	MAMIYA 645	Prime	1976	70mm	f/2.8	395g
Mamiya-Sekor C 75-150mm F/4.5	MAMIYA 645	Zoom	1982	75-150mm	f/4.5	975g
Mamiya-Sekor C 80mm F/1.9	MAMIYA 645	Portrait	1976	80mm	f/1.9	420g
Mamiya-Sekor C 80mm F/1.9 N	MAMIYA 645	Portrait	—	80mm	f/1.9	420g
Mamiya-Sekor C 80mm F/2.8	MAMIYA 645	Prime	1975	80mm	f/2.8	255g
Mamiya-Sekor C 80mm F/2.8 N	MAMIYA 645	Prime	—	80mm	f/2.8	220g
Mamiya-Sekor C 90mm F/3.8	MAMIYA RB67	Telephoto	1974	90mm	f/3.8	805g
Mamiya-Sekor C 90mm F/3.8 Golden Lizard "RB67 11th Anniversary"	MAMIYA RB67	Telephoto	1982	90mm	f/3.8	—
Mamiya-Sekor C E 70mm F/2.8	MAMIYA 645	Prime	—	70mm	f/2.8	285g
Mamiya-Sekor E 135mm F/2.8	MAMIYA E	Telephoto	1981	135mm	f/2.8	310g
Mamiya-Sekor E 135mm F/3.5	MAMIYA E	Telephoto	1980	135mm	f/3.5	310g
Mamiya-Sekor E 200mm F/4	MAMIYA E	Telephoto	1980	200mm	f/4	400g
Mamiya-Sekor E 28mm F/2.8	MAMIYA E	Wide	1981	28mm	f/2.8	165g
Mamiya-Sekor E 28mm F/3.5	MAMIYA E	Wide	1980	28mm	f/3.5	160g
Mamiya-Sekor E 28mm F/3.5 S	MAMIYA E	Wide	1982	28mm	f/3.5	140g
Mamiya-Sekor E 300mm F/4	MAMIYA E	Telephoto	1981	300mm	f/4	730g
Mamiya-Sekor E 35mm F/2.8	MAMIYA E	Wide	—	35mm	f/2.8	145g
Mamiya-Sekor E 50mm F/1.4	MAMIYA E	Portrait	1981	50mm	f/1.4	200g
Mamiya-Sekor E 50mm F/1.7	MAMIYA E	Portrait	1980	50mm	f/1.7	165g
Mamiya-Sekor E 50mm F/1.7 S	MAMIYA E	Portrait	1982	50mm	f/1.7	150g
Mamiya-Sekor E 50mm F/2	MAMIYA E	Portrait	1980	50mm	f/2	145g
Mamiya-Sekor E 50mm F/2 S	MAMIYA E	Portrait	—	50mm	f/2	145g
Mamiya-Sekor E 50mm F/3.5 Macro	MAMIYA E	Macro	1980	50mm	f/3.5	205g
Mamiya-Sekor E 80-200mm F/3.8	MAMIYA E	Zoom	1980	80-200mm	f/3.8	765g
Mamiya-Sekor EF 135mm F/2.8	MAMIYA E	Telephoto	1981	135mm	f/2.8	310g