Amazon has started selling the new Sigma 200-500mm f/2.8 APO EX DG ultra-telephoto zoom lens for Nikon DSLRs, which is perfect for astro-photography, portraits, wildlife, and sports. The lens features an SLD (Special Low Dispersion) glass, three ELD glass elements, and a super multi-layer coating to produce high quality photos. This ultra-telephoto zoom lens is powered by a rechargeable Li-ion battery BP-21 for zooming and Auto Focus operations. What's more, you can also add a 72mm filter at the rear of the lens. The Sigma 200-500mm f/2.8 APO EX DG ultra-telephoto zoom lens for Nikon is priced at a hefty $25,999.
TechFresh, Sigma 200-500mm f/2.8 APO EX DG Ultra-Telephoto Zoom Lens For Nikon