Canon FD Reflex Lens 500mm f8 brand_Other for example- but this model

for example- but this model is the last of the folding Retinas

Standard 1/4"x20 thread for camera mounting

with a few small scratches scratches on the LCD screen

It holds a decent amount of gear

with a convenient clamshell design that slips easily in and out of a pocket

Canon FD Reflex Lens 500mm f8 brand_Other for example- but this modelThe 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