Well-suited for sports and wildlife photography, the EF 500mm f/4L IS II USM is a Canon L-series super telephoto lens that blends long reach with fast performance and intuitive handling. Using a pair of fluorite elements, along with four aspherical elements, both chromatic and spherical aberrations are kept to a minimum in order to realize sharp, clear image quality with accurate rendering and color fidelity. A Sub Wavelength Coating also contributes to color accuracy and helps to control flare and ghosting when working in backlit and harsh lighting conditions.