Amazon.com : Canon EF 17-40mm f/4L USM Lens with Pro Filter
Amazon.com : Canon EF 17-40mm f/4L USM Lens with Pro Filter,Canon EF 17-40mm f/4L USM Lens Review,Canon EF 17-40mm f/4L USM | Lens Review,Canon 17-40mm f/4 L USM EF Mount Lens {77} at KEH Camera,File:Canon EF 17-40mm f4L USM front angled with hood.jpg