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Amazon.com : Sigma 18-50mm f/2.8-4.5 SLD Aspherical DC Optical Stabilized ( OS) Lens with Hyper Sonic Motor (HSM) for Nikon Digital SLR Cameras : Camera Lenses : Electronics
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Sigma 17-50mm f/2.8 EX DC OS HSM (FLD) Autofocus APS-C Lens for Select Nikon F-Mount Cameras {77} at KEH Camera
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Sigma 18-50mm F2.8 DC DN: hands-on with the lens that wants to replace your kit zoom: Digital Photography Review
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Sigma 17-50mm f/2.8 EX DC OS HSM (FLD) Autofocus APS-C Lens for Select Nikon F-Mount Cameras {77} at KEH Camera
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