Canon EF-S 17-55mm f/2.8 IS USM Lens

Canon EF-S 17-55mm f/2.8 IS USM Ultra Wide Angle Zoom Lens for for 40D, 30D, 20D, & Digital Rebel Cameras Only - U.S.A. Warranty

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 27-88mm Please Note: This lens is compatible only with the EOS 20D, EOS 30D, EOS 40D, EOS 50D, 7D and all EOS Rebel and EOS Digital Rebel models with APS-C sized sensors Not suitable for 35mm film SLR cameras, or for 35mm size "full-frame" digital cameras, e.g. 1Ds or Kodak Pro SLR/c.

Canon EF-S 17-55mm f/2.8 IS USM Lens for Canon DSLR Cameras

To meet user demands for a fast EF-S zoom lens, Canon has specially designed a new lens with a large aperture of f/2.8 for select Canon Digital SLR cameras.* The large circular aperture produces a shallow depth-of-field, creating background blur that draws attention to the photographic subject. The lens construction includes UD and aspherical elements, which deliver impressive image quality throughout the entire zoom range. Image Stabilizer lens groups shift to compensate for camera movement so that the image appears steady on the image plane, ensuring clear, crisp images, even in dim light. With a Ring-type USM, inner focusing and new AF algorithms, this lens achieves autofocus quickly and quietly, and with full-time mechanical manual focusing, manually adjusting the focus is possible even in AF mode.