Description: The world's only super telephoto reflex lens with auto-focus capability. Its reflex design gives the amazing SAL-500F80 super telephoto lens a short barrel and compact, lightweight design, ideal for field work on wilderness and nature assignments. And its auto-focus capability makes it unique among reflex lenses of this class. Mounted on the Sony a (alpha) DSLR-A100 camera, this lens provides a 750mm focal length (35mm equivalent 500mm). This lens also takes advantage of Sony's in-camera Super SteadyShot image stabilization system to reduce blur by compensating for shaky hands.