18-400mm Focal Length/ 16 Elements In 11 Groups Optical Construction/ 1:2.9 Maximum Magnification Ratio/ 72mm Filter Size/ 7 (Circular Diaphragm) Aperture Blades/ F/22-40 Minimum Aperture/ 22.2x Zoom/ Moisture-Resistant Construction/ HLD (High/Low Torque-Modulated Drive)/ Compatible With Nikon/ Black Finish