Canon FD Reflex Lens 500mm f8 power zoom except the red thing says

except the red thing says "Tracker" instead of the Swiss flag thing on the Swissgear bags

The Carl Zeiss Planar 50mm f1

This is a Canon FD 55mm f1

Some wear and discolouration on the cover

Canon FD Reflex Lens 500mm f8 power zoom except the red thing saysThe 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