Canon BG-E4 Battery Grip for EOS 5D Digital SLR Camera + Spare Replacement BP-511 Lithium-Ion Battery Pack

Kit includes: 1) Canon BG-E4 Battery Grip for EOS 5D; 2) Spare Replacement BP-511 Lithium-Ion Battery Pack. Canon BG-E4 includes: Battery magazine (BGM-E2) to hold AA batteries; Battery Pack Contacts Cover; Instruction Booklets; Canon USA Warranty. Designed exclusively for the Canon EOS 5D Digital SLR Camera, the Canon BG-E4 Battery Grip is 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 six AA batteries. It features a shutter release button, an AE/FE lock button, an AF point selector and a main dial - making shooting with the camera in a vertical position just as comfortable as shooting horizontally. If you use big zooms or telephoto lenses then the BG-E4 should be considered as a "must have" accessory. It gives you a much more stable way to hold the camera and also acts as a counterbalance by shifting the center of gravity. With constant shooting, flash usage, image review and playback, especially when you have access to additional memory, your standard battery alone will not usually be sufficient and ultimately put constraints on how you want to shoot. A spare rechargeable battery is an essential accessory. No power, no pictures!