The Canon EOS 650D (Rebel T4i) is a versatile APS-C DSLR that serves as a milestone in the EOS series, being the first to feature a touchscreen interface and Hybrid CMOS autofocus. This "extra battery handle" is the Canon BG-E8 Battery Grip, which significantly enhances the camera's ergonomics and power capacity for professional-length shoots.
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By attaching the BG-E8, you effectively double your shooting time to approximately 880 shots when using two LP-E8 batteries. The grip also provides a secondary set of controls—including a shutter release, main dial, and AF point selection—specifically positioned for comfortable vertical (portrait) orientation shooting.
Camera Technical Specifications:
Sensor: 18.0 Megapixel APS-C CMOS with Hybrid AF pixels.
Processor: DIGIC 5 for 14-bit image processing and 5.0 fps burst shooting.
ISO Range: 100 - 12,800 (expandable to 25,600).
Video: Full HD 1080p with continuous movie AF and built-in stereo mic.
LCD: 3.0" Vari-angle Touchscreen with 1,040k-dot resolution.
Battery Grip (BG-E8) Features:
Power Versatility: Holds up to two LP-E8 Li-ion batteries or six AA batteries via the included BGM-E8A magazine.
Vertical Controls: Includes an alternate shutter button, AE/FE lock, AF point selector, and main command dial.
Improved Handling: Adds significant surface area to the body, providing better balance when using large telephoto lenses.
Tripod Ready: Features a built-in tripod mounting thread at the base, allowing you to keep the grip attached while using a stand.
Physical Dimensions (Combined):
Weight: Approx. 970g (Camera body + Grip + 2 batteries).
Installation: Attaches via the camera's battery compartment (after removing the battery door) and secures into the tripod socket.