Canon FD Reflex Lens 500mm f8 brand_Other Standard 1/4"x20 thread for camera

Standard 1/4"x20 thread for camera mounting

Please note: The UV filter is an "alternate" filter holder: it can be threaded to the lens and serve as a base for other filters and caps

focus is smooth and the diaphragm blades are clean

and solid enough to support a medium-sized camera and lens

Canon FD Reflex Lens 500mm f8 brand_Other Standard 1/4"x20 thread for cameraThe Canon FD Reflex 500mm f8 is a mirror lens, which means that it collapses what would otherwise be a very long, heavy lens into a fairly lightweight package using mirrors. Mirrors! How do they work?? There are a few downsides: there's no adjustable aperture it's f8 or nothing and out of focus highlights will end up looking a bit like donuts. But it may be worth the tradeoff to pack this much magnification into a normal sized camera bag. In excellent