Powerextra BG-E8 Battery Grip for Canon EOS 550D/600D/650D/700D Rebel T2i/T3i/T4i/T5i SLR Cameras Powerextra BG-E8 provides full vertical shooting controls, which can be independently turned on or off as the photographer needs to enhance camera handling, especially for shooting vertical pictures. Battery grip can hold 2 pcs LP-E8 or 6 pcs AA-size battery backup, doubling the battery capacity for extending more shooting time. Equipped with a vertical-grip shutter button, dial, AE lock/FE lock button, and AF point selector button. Doubling the battery capacity of your camera, effectively extend your shooting time. A tripod socket on the bottom of the grip can be mount on a tirpod, easy install and uninstall, horizontal and vertical shutter fit different shooting experience.