The 70-210mm f4 D-FA HD Lens is a newly designed telephoto zoom lens from Pentax. It features loads of great features that make this lens perfect for sport, animal and even close-up photography. To name a few, Pentax have incorporated a built-in ring-type SDM that ensures quiet, high-speed AF. This is married up with a quick-shift focus system that allows for an instant shift to manual focusing which ultimately means you have the freedom to change up at a moment's notice. The lens has a compact and lightweight deign which combined with its weather resistant construction and coatings, makes it perfect for outdoor shooting.