Canon USA brings to the market their newest telephoto zoom lens from the world renowned L-series. The EF 70-200mm f/4L USM engulfs robust features for perfection. The advanced telephoto zoom lens includes an inner auto-focusing system with USM and has the maximum aperture of 1:4.0. You can use a circular polarizing filter with the lens for better results. A tripod collar sold separately will add to the existing brilliance. The lens is built from 16 elements in 13 groups to produce extra-ordinary shots every time.