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Tamron SP 17-50mm F/2.8 Aspherical DI II VC IF LD XR EF-Mount Lens for Canon APS-C DSLR {72} B005 - Used SLR & DSLR Lenses - Used Camera Lenses at KEH Camera
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Tamron AF 17-50mm F/2.8 SP XR Di II VC (Vibration Compensation) Zoom Lens for Canon Digital SLR Cameras : Amazon.ca: Electronics
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Fast zoom lens battle: Canon 17-55 f2.8, Sigma 18-35 f1.8, Tamron 17-50 f2.8 VC, Sigma 17-50 f2.8 OS - YouTube
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