The Sigma 150-600mm f/5-6.3 DG OS HSM Lens for Nikon F is a high-quality zoom lens made by the reputable brand Sigma. It is designed for Nikon cameras, with a maximum aperture of f/5-6.3 and a focal length range of 150-600mm, allowing for versatility in various photography situations. The lens features both auto and zoom focus types, making it easy to capture the perfect shot. With a weight of 1900g, it is a heavy lens that is designed for stability and durability during use. This was my Dads and he did not use it much, although I have all of his Camera I have no need for this Lens. It deserves to be used