The Targus TG-BG350 Vertical Battery Grip for the Canon EOS 350D Digital Cameras functions as both a high capacity battery pack and a vertical grip. It Holds up to 2 NB-2LH Battery packs, thereby doubling the shooting time of the camera. It also allows for the use of six AA batteries in the supplied battery magazine. The vertical shutter release makes shooting with the camera in a vertical position just as comfortable as shooting horizontally, and it supports features such as AE lock/FE lock, with access to the Index/Reduce button, main dial, AF-Frame Select button, and Aperture/Exposure Compensation Button.