Made just for many EOS Digital SLR Cameras, the Battery Grip BG-E2 holds up to 2 Battery Packs BP-511 or 6 AA Batteries to offer double-length shooting time. The vertical shutter release makes shooting with the camera in a vertical position just as comfortable as shooting horizontally.
The following functions are available in the vertical shooting position. Shutter, Main Dial, AF Point Selection, AF/FE Lock, and AV +/-.
For AC driven shooting the BG-E2 is compatible with the AC Adapter Kit ACK-E2. Optional Hand strap E1 is available