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

A tremendously flexible standard zoom for APS-C-format DSLRs, the EF-S 17-55mm f/2.8 IS USM from Canon pairs the 27.2-88mm equivalent focal length range with a bright f/2.8 constant maximum aperture. Benefitting this design is a sophisticated optical layout, which includes both Ultra-Low Dispersion glass and aspherical elements to significantly reduce chromatic and spherical aberrations for improved clarity and sharpness throughout the zoom range. {Key Features} - EF-S-Mount Lens/APS-C Format - 27.2-88mm (35mm Equivalent) - Aperture Range: f/2.8 to f/22 - Two UD and Three Aspherical Elements {Overview} A Super Spectra coating has also been applied to individual elements to suppress flare and ghosting for increased contrast when working in bright environments. Beyond the optical attributes, this 17-55mm is also characterized by its advanced three stop-effective Image Stabilizer system to minimize the appearance of camera shake. Also complementing handling is a sophisticated ring