The canon 17 55mm with a constant f/2.8 aperture throughout the zoom range and a 3-stop Image Stabilizer, the Canon ef s 17 55mm f 2.8 is usm provides outstanding performance and framing flexibility in low light conditions.

Canon ef s 17 55 features

Wide angle zoom for EF-S mount bodies
f/2.8 aperture throughout zoom range
3-stop Image Stabilizer
Fast, quiet auto focus
Super Spectra coating
Circular aperture for pleasing background blur
Passes distance information to E-TTL II
Optional lens hood

The Canon 17-55mm lens includes:
77mm Snap-On Lens Cap and Lens Dust Cap E (Rear)

Canon 17 55mm Reviews

- Supurb image quality, very useful IS makes getting a shot in very low light possible. Possibly the best walkaround lens for a cropped Canon DSLR - Mark, London

- Image quality is incredible. like primes really. quality of construction is good. - Harold, London