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Amazon.com : Sigma 24-70mm f/2.8 DG OS HSM Art Canon EF Lens Bundle with USB Dock, 64 SD Memory Card, Camera System Gadget Bag with Accessory & Cleaning Kit (5 Items) : Electronics
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Lens Shootout: High-Performance 24-70mm F/2.8 Zooms from Canon & Sigma, Which Is Best? (VIDEO) | Shutterbug
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