Canon BG-E7 Battery Grip is an interesting accessory to consider for your 7D.
The Canon battery grip does not get as much fanfare as a Canon Speedlite as an accessory but a good grip should have an appeal for some photographers with certain needs.
Do you ever shoot over 500 shots in a single photo shoot?
This is not the primary reason photographers buy a camera grip, but it's nice to have that extra back-up battery installed in case you have a battery go defective on you.
School photographers, sports photographers and event photographers certainly need the extra capabilities for power.
If you ever use a long lens on your 7D for extended periods, you may like the added balance that a larger-heavier camera gives you to counter-balance the weight of the lens. Sometimes it's not just a mathematical or measurable reason to use a battery grip.
Many Canon users just like the grip becomes it just feels better. If you have large hands a grip gives you a little more camera for your fingers to grab.
If you shoot a lot of vertical portraits like I do, a grip gives you several advantages on comfort and ease of use for controlling the camera functions. Rather than having to release your grip to change a setting, a vertical grip lets you make the changes quickly on the fly.
Without a grip some photographers find that rotating the camera and your hand along with it feels a bit awkward and puts strain on your wrist, particularly if you have a long telephoto lens attached to your 7D.
The BG-E7 takes the LP-E6 batteries, the same batteries that fit in the 60D, the 5D Mark II , and 5D Mark III.
The Canon BGM-E6 magazine is the cartridge that fits into the battery grip that holds 6 AA batteries. See the photo of the BGM-E6 below.
Some photographers prefer the rear door for direct battery insertion. The BG-E7 will function with either one or two of the LP-E6 batteries inserted.
The grip has the main dial, an M-Fn button, AEL, AF, and the AF-point selection button included.
The on-of switch on the Canon battery grips does not turn the battery grip off. It de-activates the controls on the grip. This prevents an accidental change to a camera setting or take an inadvertent photograph.
The battery grip will power the camera provided the camera's power switch is on. The designs and functions of the Canon battery grips have come along way since the early models like the BG-E2 and BG-E2N were released.
This is true for most Canon camera accessories and the Canon BG-E7 battery grip is no exception. It comes with the excellent Canon quality build and the corresponding Canon price tag.
More information here for other Canon 7D accessories.
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