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Is Tamron 28-75mm F2.8 optically better than Pentax 28-105mm F3.5-5.6?: Pentax SLR Talk Forum: Digital Photography Review
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Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) Lens for Pentax Digital SLR Cameras (Model A09P) : Camera Lenses : Electronics - Amazon.com
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Amazon.com : Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) Lens for Pentax Digital SLR Cameras (Model A09P) : Camera Lenses : Electronics
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Amazon.com : Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) with Built-In AF Motor for Nikon Digital SLR Cameras (Model A09NII) : Camera Lenses : Electronics
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Tamron announces APS-C 11-20mm F2.8, full-frame 150-500mm F5–6.7 zooms for Sony E-mount: Digital Photography Review
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