The Hahnel Innovative Accessories HC-500D Infra BatteryGrip is designed for the Canon Rebel XS (1000D), T1i (500D) & XSi (450D) digital cameras. The grip allows you to use with 1 or 2 Li-Ion batteries, even if they have different charge levels. Camera handling is improved with a lower point of gravity with the BatteryGrip in place, especially when long focal lenses are used.
The BatteryGrip has a built-in infrared receiver. This is specially designed for digital SLRs without an integrated infrared remote receiver. The included Infrared remote control can be used to activate this built-in receiver up to 39' (12m) away. The remote control transmitter provides autofocus before shutter release and continuous shutter release or bulb function for as long as the button remains pressed.