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Amazon.com : Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Nikon Digital DSLR Camera : Camera Lenses : Electronics
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Sigma 17-50mm F2.8 EX DC OS HSM vs Nikon AF-S DX Nikkor 17-55mm f2.8G ED-IF Detailed Lens Comparison
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Tamron 17-50mm f/2.8 Aspherical LD XR Di II SP (8-Pin) APS-C (DX) Lens for Nikon F-Mount {67} A16II at KEH Camera
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Tamron 17-50mm f/2.8 Aspherical LD XR Di II SP (8-Pin) APS-C (DX) Lens for Nikon F-Mount {67} A16II at KEH Camera
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