The EF-S 17-55mm f/2.8 IS USM Lens from Canon is a large-aperture lens compatible with APS-C format digital SLR cameras, and offers a versatile wide-angle to short telephoto zoom range. The focal length is equivalent to approximately 27-88mm in 35mm format and its constant f/2.8 maximum aperture is effective in low light throughout the zoom range. A wide maximum aperture also enables shallow depth of field control.
High-performance wide-angle zoom
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 EF-S 17-55mm f/2.8 IS USM features Canon’s 3-stop Image Stabilizer (IS). Ideal for handheld work, IS allows 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.
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.
Passes distance information to E-TTL II
The lens passes distance information back to the camera’s E-TTL II flash system to ensure optimal flash metering in any shooting situation.
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.
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.