Focal Length &: 24mm
Maximum Aperture: 1.4
Minimum Aperture: 22
Lens Construction : 11 elements in 9 groups
Diagonal Angle of View : 84o
Focus Adjustment : Rear focusing system with USM
Closest Focusing Distance : 0.25m / 0.82 ft.
Filter Size : 77mm
Dimensions (D x L) : 83.5 x 77.4mm (3.3" x 3.1")
Weight : 550g (19.4oz)