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Canon 50-1000mm T5.0-8.9 Cine Servo Zoom - Duclos Lenses
Amazon.com : Super-Powered 500mm/1000mm f/8.0 Manual Telephoto Lens (Black) with 2X Professional Multiplier for Canon EOS Digital SLR Cameras and Deluxe Accessory Bundle with Xpix Cleaning Kit : Electronics