Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
LudwigMERITAR 50mm F/2.9 [V] Type 2	EXAKTA	Prime	1957	50mm	f/2.9	100g
LudwigMERITAR 50mm F/2.9 Type 2	EXAKTA	Prime	1957	50mm	f/2.9	100g
LudwigMERITAR 50mm F/2.9 Type 3	EXAKTA	Prime	1963	50mm	f/2.9	125g
LudwigMERITAR 50mm F/2.9 V Type 1	EXAKTA	Prime	1951	50mm	f/2.9	60g