30 SYSTEM ACCESSORIES30 System Accessories30.1 Canon AE Motor Drive FNThe AE Motor Drive FN is designed as an integral part of the New Canon F-1system. Attached tq the camera, this accessory redefines the meaning of automaticin motorized SLR photography by providing you with automatic film winding andpower rewinding as well as shutter-priority AK, the ideal exposure mode for sports,action and candid photography Three separate power sources, the Battery PackFN, Ni-Cd Pack FN, and the High Power Ni-Cd Pack FN, are available to suityour preference and the shooting situation. With Battery Pack FN or High PowerNi-Cd Pack FN, sequential shooting at up to five frames per second is possible;Ni-Cd Pack FN enables film advance at 4.5 frames per second. The motor drive isequipped with two shutter buttons for maximum ease of operation when shootingin either the horizontal or vertical format, and a remote control socket.71