This is the current Canon EF 50mm F1.2L USM lens released in 2007 and now its successor EF 50mm F1.2L USM II lens is rumored to be announced next year after the EF 35mm f/1.4L II lens.
The new Canon EF 50mm F1.2L USM II lens is designed slightly smaller, and a bit heavier than the current version.
Source: CR
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