Designed especially for the EOS 5D Digital SLR Camera,the BG-E4 is a battery grip constructed with the same magnesium alloy as the camera's exterior, and it has a solid and comfortable hold. The grip accommodates two BP-511A/514/512/511 battery packs or 6 AA batteries. The BG-E4 Battery Grip features a shutter release button, and an AE/FE lock button, an AF point selector and a main dial to allow comfortable use of the camera when it is vertically held.
The Canon BG-E4 Battery Grip for the adds a vertical shutter release to an already robust camera. This grip is compatible with up to two of or, alternatively, a set of six AA-size batteries, for increased shooting capacity and greater convenience when traveling. In addition, it features an AE/FE lock button, AF point selector, and a main dial to enable comfortable use of the camera when held vertically.