This Canon 50mm f/1.2 L Aspherical Floating-Element lens is the most optically advanced 50mm manual-focus lens ever sold anywhere.
It’s got more technology in it than anything from Nikon or LEICA, who have never put aspherics and floating elements in any of their 50mm f/1.2 lenses.
This was one of Canon’s flagship lenses before the entire FD line was trashed in 1987 in favor or the EOS autofocus system. This is adapted to a Sony E-mount and is compatible with any Sony E-mount mirrorless camera.
This is manual focus only.