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Amazon.com : Sigma 50-200mm f/4.0-5.6 DC IF SLD Optical Stabilized (OS) Lens with Hyper Sonic Motor (HSM) for Canon Digital SLR Cameras : Camera Lenses : Electronics
FS: Sigma 50-200mm F4-5.6 DC OS HSM (Canon fit): For Sale and Wanted Forum: Digital Photography Review
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