Battery Grip for the Canon EOS 5D Mk III
The Canon BG-E11 is an optional battery grip specifically dedicated to the EOS 5D Mark III. The BG-E11 can be operated with one or two LP-E6 battery packs installed. With two packs, the already-impressive battery life is doubled, compared to using a single LP-E6 pack in-camera.
Alternatively, the grip and camera can be powered using six AA batteries via the supplied holder. For extended use of the EOS 5D Mk III's movie mode or Live View, the BG-E11 is an outstanding accessory.
The BG-E11 also provides full vertical shooting controls, which can be independently turned on or off as the photographer desires. Many users find the battery grip can enhance camera handling, especially when shooting vertical pictures.