http://www.usa.canon.com/cusa/support/consumer/camcorders/professional_camcorders/xl1?pageKeyCode=writeReviewPage
XL1
8274
Features
SuperRange Optical Image Stabilizer
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Until now, optical image stabilizers have used solely a gyro sensor to detect camcorder vibration (the data from which controls a vari-angle prism that continuously corrects the path of the incoming light). SuperRange goes one step further by examining the image after it is received by the CCD, and detecting low-frequency vibrations missed by the gyro. This data is fed-back to accelerate and refine the movement of the vari-angle prism. This greatly improves performance for low frequency vibration, resulting in the most advanced optical image stabilization available today.
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