Sigma APO 200-500mm F2.8/400-1000mm EX DG Lens - Sony Mount
Sigma 1000mm F/13.5 Mirror Manual Focus Lens For Minolta SR Mount {30.5} at KEH Camera
Amazon.com : Super-Powered 500mm/1000mm f/8.0 Telephoto Lens (Black) with 2X Professional Multiplier for Sony E-Mount Digital Mirrorless Cameras and Deluxe Accessory Bundle with Xpix Cleaning Kit : Electronics
APO 200-500mm F2.8/400-1000mm F5.6 EX DG - SIGMA CORPORATION
Sigma APO 200-500mm f/2.8 (400-1000mm f/5.6 w/ Included 2x Teleconverter EX DG | eBay