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Amazon.com : Sigma 24-70mm f/2.8 IF EX DG HSM AF Standard Zoom Lens for Sony Digital SLR Cameras : Digital Slr Camera Lenses : Electronics
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Amazon.com : Sigma 24-70mm f/2.8 IF EX DG HSM AF Standard Zoom Lens for Nikon Digital SLR Cameras : Digital Slr Camera Lenses : Electronics
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