Lens Mount: Canon EF
Focal Length: 50mm
Maximum Aperture: f/1.2
Lens Construction: 8 elements in 6 groups
Diagonal Angle of View: 46° (with full-frame cameras)
Focus Adjustment: AF with full-time manual
Closest Focusing Distance: 1.48 ft. / 0.45m
Filter Size: 72mm
Max. Diameter x Length, Weight: 3.4 in. x 2.6 in./85.4mm x 65.5mm / 19.2 oz./545g (lens only)