A high-magnification Canon EF Cinema Lens supporting 4K resolution, including drive unit realizing operability of a broadcast lens , making it well suited to satisfy the diverse expressive techniques required in the creation of such broadcast content as television commercials, dramas and documentaries, as well as motion pictures and other cinematic productions. Also available in PL mount. Power Supply: In some cases the camera will be able to provide power to the lens through the mount. Otherwise the lens will require an external battery. Please ask Canon or any authorized dealers for details.