The Nikon 300mm f/4 D AF-S IF ED is a high-power, AF-S autofocus, telephoto lens. This lens is well suited to nature, airshows and sports photography. The Nikon 300mm f/4 is often compared to the Nikon 80-400mm f/3.5-5.6. The 300mm f/4 has advantages with it's faster aperture and lighter weight of 1440 grams compared to the 1360 gram weight of the Nikon 80-400mm lens. The Nikon 80-400mm lens is superior for the versatility of it's zoom range and more powerful 400mm maximum focal length.
AF-S: Nikon AF-S ultrasonic autofocus is faster and quieter than mechanical autofocus systems.