Building on the success of the original 2013 SP 150-600mm lens, the Tamron 150-600mm f5-6.3 VC USD G2 Lens features an upgraded optical performance, faster autofocus speed, Vibration Control improvements, and a protective fluorine coating that is water- and oil-repellent as well as leak-proof seals throughout. This ultra-telephoto lens is designed for wildlife and sports photographers.