Sony 135mm f/1.8 Carl Zeiss Sonnar T* SAL-135F18Z
(From Sony lens literature) Experience the amazing image quality of the Carl Zeiss SAL-135F18Z telephoto lens. Its wide range can handle images that are miles or inches away.
A high-performance telephoto lens with the widest aperture in its class. Whether you're shooting a distant mountain peak or a beautiful orchid at arm's length, this superb telephoto lens provides amazing image quality. Its f/1.8 aperture makes it the brightest telephoto lens in its class -- and with 35mm-equivalent 202.5mm focal length plus the ability to focus tightly on objects closer than three feet away, it can cover an amazing range of photographic assignments.
Ultra-Bright Images: At fully open f/1.8 aperture (the best in its class), this high-performance 135mm lens creates amazingly bright telephoto images.
Superb Sharpness: In conjunction with the Super SteadyShot image stabilization system of the Sony a (alpha) DSLR-A100 camera, this lens gives you excellent results even working with hand-held camera by available light.
Close-up Focusing: You can capture professional-quality images of both faraway scenes and objects closer than three feet.
Internal Focusing System: Internal lens elements move to increase auto-focus speed to help you catch quick action.
ED (Extra-low Dispersion) Glass: Two ED Glass lenses minimize flare and greatly reduce chromatic aberration, giving you sharp, clear telephoto shots.