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Amazon.com : Tamron SP Auto Focus 17-50mm F/2.8 XR Di-II LD SP Aspherical (IF) Zoom Lens with Built In Motor for Nikon Digital SLR : Camera Lenses : Electronics
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Amazon.com : Tamron Auto Focus 18-270mm f/3.5-6.3 PZD All-In-One Zoom Lens with Built in Motor for Sony DSLR Cameras (Model B008S) : Camera Lenses : Electronics
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