Canon BGE3 Battey Grip for Digital Rebel XT

Exclusive to the EOS Digital Rebel XT functions as both a high-capacity battery pack and a vertical grip Accepts up to two NB-2LH battery packs approximately doubling the camera‘s shooting capacity Can also be used with six AA batteries in the supplied battery magazine Provides additional controls for easier vertical shooting: shutter release AE lock/FE lock Index/Reduce button main dial and AF-Frame-Select button Aperture/Exposure Compensation button
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Is the Canon Digital Rebel XT a good camera for weddings and portraits?