DescriptionDesigned to meet consumer demands for a fast EF-S zoom lens, the EF-S 17-55mm offers image quality on par with Canons highly regarded L-series lenses. The lens features a large circular aperture that produces a shallow depth of field, creating background blur that draws special attention to the photographic subject. The lens construction, meanwhile, includes UD and aspherical elements that deliver impressive image quality throughout the entire zoom range.Real time price comparison from PriceGrabber