The EF-S 17-55mm f/2.8 IS USM offers image quality on a par with Canon's highly regarded L-series lenses. It has a large maximum aperture which, combined with higher shutter speeds can minimize subject motion blur. Shallow depth-of-field separation of a subject from its background is much easier to achieve and the f/2.8 maximum aperture allows a bright finder and extremely precise focusing with f/2.8 compatible AF sensors.The internal stabilization has a sharpness benefit equivalent to a three-stop faster shutter speed, making this lens outstanding in low light situations. Smaller and lighter than lenses of similar specifications, the EF-S 17-55 mm f/2.8 IS USM lens has a 35mm equivalent focal length of
Focal Length & Maximum Aperture
17-55mm 1:2.8
Lens Construction
19 elements in 12 groups
Diagonal Angle of View
78°30' - 27°50'
Focus Adjustment
AF with full-time manual
Closest Focusing Distance
1.15 ft. / 0.35m
Zoom System
5-group helical zoom (front group moves: 27mm)
Filter Size
77mm
Max. Diameter x Length, Weight
3.3 in. x 4.4 in., 22.8 oz. / 83.5mm x 110.6mm, 645g (lens only)
