With an effective focal length range of approximately 27-88mm (35 mm equivalent), the EF-S 17-55mm f/2.8 IS USM is a powerful lens that delivers remarkable image quality. The wide-angle zoom allows you to capture more of every scene and add a new sense of space and perspective to your photography.
The large f/2.8 aperture provides excellent results in low light conditions. The aperture remains constant through the full focal length range, allowing you to zoom from approximately 27-88mm (35 mm equivalent) without slowing shutter speed.
Pleasing background blur
A circular aperture provides a pleasing background blur when shooting with a wide aperture; ideal for creating a sense of depth and isolating your subject from the background.
The EF-S 17-55mm f/2.8 IS USM features Canons 3-stop Image Stabilizer (IS). Ideal for handheld work, IS allows the use of shutter speeds up to 3 stops slower with no perceptible increase in image blur. IS helps with low light conditions, fast-paced scenes and shooting from moving vehicles.
Fast, quiet autofocus
A ring USM (Ultrasonic motor) uses ultrasonic frequency vibrations to drive responsive, near-silent high-speed autofocus. Good holding torque stops the focusing lens group with precision without overshoot. Full-time manual focus override is available without having to switch out of AF.
Super Spectra coatings
Optimised Super Spectra lens coatings and lens element shaping suppress flare and ghosting - more prone to occur with digital cameras due to reflection off the image sensor. Coatings also help achieve true colour balance and increase contrast for vivid hi-fidelity images.
Passes distance information to E-TTL II
The lens passes distance information back to the cameras E-TTL II flash system to ensure optimal flash metering in any shooting situation.