The Nikon Nikkor 400 mm lens is a high performance camera lens that produces high quality, detailed photos. Weighing 9.7 lbs and made out of magnesium die-cast, this Nikon camera lens is lightweight, making it easy to maneuver when trying to capture the perfect shot. This f/2.8 telephoto lens eliminates vibrations that can cause image distortion by coming equipped with a tripod mounting foot that makes it compatible with various photography tripods. The Nikon Nikkor 400 mm lens features a Nikon patented Silent Wave Motor. The Silent Wave Motor on this Nikon camera lens changes aperture levels with speed and accuracy while doing it with as little noise as possible. This f/2.8 telephoto lens uses high performance, extra low optical glass to minimize aberrations and eliminate potential causes of image distortion. The Nikon Nikkor 400 mm lens is a versatile telephoto lens that can be used for capturing high quality, detailed photos when engaging in long distance and close-up photography.