Mount Type : Canon EF
Focal Length : 135 mm
Maximum Aperture : T2.2
Iris Blades : 11
MOD From Front of Lens : 1m (3.28')
Angular Field of View 24.6 x 13.8 mm (1.78:1) : 10.4 x 5.9o, 36 x 24 mm (1.5:1) : 15.2 x 10.2o
Front Lens Diameter : 114mm (4.48 in)
Dimensions : 118.4 x 118.4 x 115.6 mm (4.66 x 4.66 x 4.55 in)
Weight : 1.4kg (3.09 lb)