Powerextra BG-E5 Battery Grip For Canon EOS 450D/500D/1000D Rebel Xsi/T1i/Xs Work with 2 pcs LP-E5 batteries or 6 AA-size batteries Quick release battery grip can hold 2 pcs LP-E5 or 6 pcs AA-size battery backup, doubling the battery capacity for extending more shooting time A tripod socket on the bottom of the grip can be mount on a tirpod, lightweight, horizontal and vertical shutter fit different shooting experience Same function on the grip as the camera, not affected any function of the original camera BG-E5, Feature a variety of operating control: shutter button, Main Dial, multi-controller, AF point selection button, AE lock/FE lock button, AF start button, and multi-function button Battery grip for CANON EOS 450D 500D 1000D Rebel Xsi T1i Xs camera, Note: battery grip only, not including the battery, camera Vertical firing release with lock, the surface material:PC + GF10 + striae process, have a superior holding feeling