Compare Canon EF 28-300mm f/3.5-5.6L IS USM Lens to Tamron AF17-50mm f/2.8 Di-II LD Aspherical for Nikon

The new EF28-300mm f/3.5-5.6L IS USM is an entirely new L-series design lens (and a significantly enhanced successor to Canon?s EF35-350mm f/3.5-5.6L USM zoom introduced 11 years ago). Though it offers 11x zoom capabilities (compared with the 10x capability of its predecessor), this newly designed, 22-element L-series lens combines Canon?s newest optical glass advances, faster autofocus and a groundbreaking Image Stabilization system that makes capturing incredible images a snap, even when the zoom is at max, the shutter speed is slow and the camera is handheld. Less

The SP AF17-50mm F/2.8 is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras, expanding the product concept of the popular SP AF28-75mm F/2.8 zoom lens. In addition, portrait shots are made beautiful with the natural out-of-focus effect characteristic provided by the fast F/2.8 aperture. Additionally, a broader photographic expression through the use of faster shutter speeds as a result of the maximum aperture offers enhanced photographic pleasure. The lens boasts one of the best close-up shooting performances in the class of fast standard zoom lenses designed exclusively for digital cameras and featuring an F/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances. Less