Canon 50mm f1.2 in Leica screw mount. Introduced in 1956, with a 7-element, 5-group optical design. Distance scale in feet. Filter thread size is 55mm. This example has a serial number in the 13xxx range, likely produced around 1957.
A large-aperture standard lens from Canon, the 50mm f1.2 is second in brightness only to the legendary f0.95. It is sometimes referred to overseas as the Japanese Noctilux. When free from the common haze issue, this lens delivers beautiful rendering with the unique character of a fast classic. This particular piece focuses accurately and has exceptionally clean glass.

Previously sold by our store. Over nearly ten years, this lens has traveled back and forth between customers, and this marks its sixth appearance for sale. A lens with a strong homing instinct!
There is some minor paint loss on the helicoid ring’s knurling, but overall the exterior is in very clean condition for this model.
The Canon 50mm f1.2 often suffers from loose aperture clicks and a stiff, rough helicoid, but this example was fully overhauled in 2017, and thanks to the meticulous servicing, it still operates with smooth, pleasant precision today. Rangefinder coupling is perfect.
This lens is also known for developing haze in the middle elements, yet this one is exceptionally clear and bright, with no visible cleaning marks and remarkably clean glass.
Thanks to the rare clarity of the optics, image performance is excellent. Sample photos taken with this lens from a previous sale are available in our test gallery—please take a look.
Comes with original front and rear caps and a filter.