Sony SAL-135F18Z 135mm f/1.8 Carl Zeiss Sonnar T Telephoto Lens for Sony Alpha Digital SLR Camera Carl Zeiss Sonnar T 135mm f/1.8 Telephoto, Wide aperture for amazingly bright telephoto shots, Superb sharpness with Sony Super Steady Shot system Close-up focusing capability (less than three feet), Internal Focusing to speed auto-focus response 2 ED Glass elements for sharp clear long shots Carl Zeiss Sonnar T 135mm f1.8 telephoto with wide aperture for amazingly bright telephoto shots Superb sharpness with Sony Super SteadyShot system Close-up focusing capability (less than three feet) Internal Focusing to speed autofocus response 2 ED glass elements for sharp clear long shots