Vivitar 75-300mm f5.6 Close Focusing Zoom - Lens – Kamerastore
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Amazon.com : Vivitar 500mm f/8.0 Telephoto Lens with 2x Teleconverter (=1000mm) + Accessory Kit for Canon EOS 60D, 6D, 7D, 5D Mark II III, Rebel T3, T3i, T4i Digital SLR Cameras :