Nikon AF-S FX NIKKOR 80-400mm f.4.5-5.6G ED Vibration Reduction Zoom Lens with Auto Focus for Nikon DSLR Cameras FX-format compatible Focuses as close as 5.7 feet during AF operation Vibration Reduction Approx. 95.5 mm maximum diameter x 203 mm (distance from camera lens mount flange) Approximate weight:3.5 lbs(1570 g)including tripod collar based on CIPA guidelines. Approximate weight: 1480g (3.3lbs) without tripod collar