Tamron 70-300mm f/4-5.6 Di Telephoto Zoom Lens for Canon Black AF017C-700 - Best Buy
Tamron SP 70-300mm f/4-5.6 Di VC USD Telephoto Zoom AFA005C-700
Amazon.com : Tamron Auto Focus 70-300mm f/4.0-5.6 Di LD Macro Zoom Lens with Built In Motor for Nikon Digital SLR (Model A17NII) : Digital Slr Camera Lenses : Electronics