Canon 17-40mm f4 L USM EF SLR Lens

Ultra wide lens for analogue EOS SLR cameras The EF17-40mm f/4L USM is an ultra wide angle Canon EF zoom lens meant for professional and high amateur SLR EOS camera users. Standard zoom lens for digital EOS SLR cameras While it is an excellent lens when used with an analogue SLR camera, the EF17-40mm f/4L USM is especially well suited for digital SLR