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 : Sigma 18-50mm f2.8 DC DN Contemporary Lens for Sony E with Advanced Accessory and Travel Bundle (Sigma 1-Year USA Warranty) Sigma 18-50mm f2.8 Sony Lens : Electronics
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Tamron SP AF 17-50mm f/2.8 XR Di II LD IF Lens Review
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