Focal Length : 17 to 120mm
Zoom Ratio : 7x
Maximum Relative Aperture - At 17 to 91mm : T 1:2.95, At 120mm : T 1:3.9
Number of Aperture Blades : 11
Angle of View - For 1.9:1 Super 35 (26.2 x 13.8 mm) sensor : At 17 mm 75.2 x 44.2o, At 120 mm 12.5 x 6.6o
Minimum Object Distance (M.O.D.) : 0.85 m / 2.8'
Object Dimensions at M.O.D. - For 1.9:1 Super 35 (26.2 x 13.8 mm) sensor :
At 17 mm - 92.1 x 48.5 cm (36.3 x 19.1")
At 120 mm - 12.7 x 6.7 cm (5 x 2.6")
Front Diameter : 114 mm
Mount Type : EF mount

Gear Pitch -
Focus : 0.8 mm and 0.5 mm - dual ring design
Iris : 0.4 mm
Zoom : 0.5 mm

Dimensions : 174 x 125 x 263 mm (6.9 x 4.9 x 10.4 in)
Weight : 2.9 kg (6.4 lb)