Amazon.com : Sigma 17-70mm f/2.8-4 DC Macro OS HSM Lens for Nikon Mount Digital SLR Cameras : Camera Lenses : Electronics
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Amazon.com : Sigma 17-70mm f/2.8-4 DC Macro OS HSM Lens for Nikon Mount Digital SLR Cameras : Camera Lenses : Electronics
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Re: Nikon 16-80mm vs Sigma 17-50 vs Sigma 17-70: Nikon SLR Lens Talk Forum: Digital Photography Review
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