Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
NovoflexMacro-Noflexar 35mm F/3.5	EXAKTA	Macro	1963	35mm	f/3.5	185g
Oberon-11K200mm F/2.8 MC	PENTAX K	Telephoto	—	200mm	f/2.8	750g
OfficineGalileo ELIOG 50mm F/3.5 LSM	M39	Prime	—	50mm	f/3.5	—
OfficineGalileo ESAOG 50mm F/2 LSM	M39	Portrait	—	50mm	f/2	—
OfficineGalileo TELEOG 135mm F/4.5 LSM	M39	Telephoto	—	135mm	f/4.5	—
OfficineGalileo TESOG 35mm F/4.5 LSM	M39	Wide	—	35mm	f/4.5	—
OfficineGalileo TESOG 50mm F/3.5 LSM	M39	Prime	—	50mm	f/3.5	—
Old DelftFOTOTEL 400mm F/5 Mirror	INTERCHANGEABLE MOUNT	Mirror	—	400mm	f/5	1000g
Old DelftFOTOTEL 450mm F/5.6 Mirror	INTERCHANGEABLE MOUNT	Mirror	1949	450mm	f/5.6	1135g
Old DelftMINOR 35mm F/3.5 For Contax	CONTAX	Wide	—	35mm	f/3.5	—
Old DelftMINOR 35mm F/3.5 LSM	M39	Wide	—	35mm	f/3.5	—
Old DelftMINOR 40mm F/3.5 For Exakta	EXAKTA	Prime	—	40mm	f/3.5	—
OlympusM.Zuiko Digital ED 9-18mm F/4.0-5.6 II	MICRO 4/3	Macro	—	9-18mm	f/4	154g
Olympus9mm F/8 Fish-Eye Body Cap Lens	MICRO 4/3	Fisheye	2014	9mm	f/8	30g
OlympusAF 24mm F/2.8	OLYMPUS OM	Wide	1987	24mm	f/2.8	170g
OlympusAF 28-85mm F/3.5-4.5 Close Focus	OLYMPUS OM	Zoom	1987	28-85mm	f/3.5	480g
OlympusAF 28mm F/2.8	OLYMPUS OM	Wide	1986	28mm	f/2.8	170g
OlympusAF 35-105mm F/3.5-4.5 Close Focus	OLYMPUS OM	Zoom	1987	35-105mm	f/3.5	460g
OlympusAF 35-70mm F/3.5-4.5 Close Focus	OLYMPUS OM	Zoom	1986	35-70mm	f/3.5	250g
OlympusAF 50mm F/1.8	OLYMPUS OM	Portrait	1986	50mm	f/1.8	170g
OlympusAF 50mm F/2.8 Macro	OLYMPUS OM	Macro	1987	50mm	f/2.8	340g
OlympusAF 70-210mm F/3.5-4.5 Close Focus	OLYMPUS OM	Zoom	1986	70-210mm	f/3.5	790g
OlympusBody Cap Lens 15mm F/8	MICRO 4/3	Macro	2012	15mm	f/8	22g
OlympusD.Zuiko Auto-S 38mm F/2.8	OLYMPUS PEN F	Prime	—	38mm	f/2.8	128g
OlympusE. Zuiko 100mm F/2.8	OLYMPUS OM	Cinema	—	100mm	f/2.8	230g
OlympusE.Zuiko Auto-Macro 38mm F/3.5	OLYMPUS PEN F	Macro	1969	38mm	f/3.5	175g
OlympusE.Zuiko Auto-S 38mm F/2.8	OLYMPUS PEN F	Prime	1969	38mm	f/2.8	70g
OlympusE.Zuiko Auto-T 100mm F/3.5	OLYMPUS PEN F	Cinema	1963	100mm	f/3.5	250g