Pack light. Go big When photographing birds, wildlife, sports or action, mobility can make the difference between nailing the shot or missing it altogether. The AF-S NIKKOR 500mm f/5.6E PF ED VR is a fraction of the size of most full-frame 500mm lenses, freeing you to be as nimble as your subjects. Travel light Nikon's smallest, lightest full-frame 500mm prime lens ever-approx. 9.3 inches long and 3.2 lbs. Bring the world in reach Powerful 500mm focal length (750mm equivalent on DX-format) brings the shots that matter in reach. Shoot in the moment Handheld vibrations are tamed by VR image stabilization equivalent to a shutter speed 4.0 stops faster. Proprietary Phase Fresnel technology For nearly two centuries, Fresnel lenses were used in lighthouses to project a strong beam of light. By harnessing the idea in reverse-for gathering light instead of projecting it-Nikon engineers can create lenses that are shorter and lighter, with the same image quality and zoom power of much larger lenses. Outstanding image quality When combined with Nikon's Extra-low Dispersion (ED) glass and other NIKKOR glass elements, the Phase Fresnel element produces high resolution, high contrast images with beautiful background blur. Fast autofocus Lighter, more compact optics don't just benefit your mobility-a lighter focus lens group allows the autofocus system to focus fast