A battery grip is an accessory for an SLR/

DSLR A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor. The reflex design scheme is the primary difference between ...

(and occasionally other cameras), which allows the camera to hold multiple batteries to extend the battery life of the camera, and adds a vertical grip with an extra shutter release (and other controls), facilitating the shooting of

portrait photography Portrait photography, or portraiture, is a type of photography aimed toward capturing the personality of a person or group of people by using effective Photographic lighting, lighting, Painted photography backdrops, backdrops, and poses. A portr ...

. Some models may also feature a continuous shooting boost which increases the

burst rate Frame rate (expressed in or FPS) is the frequency (rate) at which consecutive images (frames) are captured or displayed. The term applies equally to film and video cameras, computer graphics, and motion capture systems. Frame rate may also be ...

of the camera's shutter. It usually attaches to the camera body through the camera's own battery compartment and provides a cassette to hold additional batteries to increase the battery life for the camera. Most battery grips also come with a second cassette allowing the photographer to shoot using multiple AA batteries. Battery grips are usually designed to fit only one or a few specific camera models, since they must match the body's shape, connectors, and power requirements.

References

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