Perfect for portraiture and sports coverage, the Canon EF 135mm f/2L USM Lens is the fastest 135mm telephoto lens in its class. Capture the close-ups of your dreams as, with the long focal length and f/2 maximum aperture, the lens allows for a great deal of control over depth of field in isolating subject matter and selective focus. Get outstanding sharpness and color accuracy to your image with the two UD-glass elements correcting the secondary spectrum. Furthermore, for quick and quiet autofocus performance (and full-time manual focus control), you can't go wrong with the ring-type USM employed by the lens.