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Sigma 50-500mm f/4.5-6.3 APO DG OS HSM SLD Ultra Telephoto Zoom Lens for Nikon Digital DSLR Camera : SIGMA: Amazon.ca: Electronics
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Sigma 50-100mm f/1.8 DC HSM Art Lens for Nikon A50100DCHN DSLR Non-Full Frame Zoom Telephoto Lenses - Vistek Canada Product Detail
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