Ideal for Canon EOS (SLR) Digital Cameras, the EF 135 mm f/2L USM Telephoto Lens from Canon is designed for low-light shooting condition and can be easily hand-held by most users. This lens combines excellent picture quality, telephoto â  reachâ  and fast maximum apertures. It uses two UD-glass elements to provide excellent sharpness and contrast, even wide-open. Compatible with the EF Extenders 1.4x II and 2x II, the USM Telephoto Lens allows versatile and detailed subject selection, thus providing an easy and enjoyable picture-taking experience.