Double the reach of select lenses with the Nikon AF-S Teleconverter TC-20E III and its 2x magnification for use with F-mount cameras. With full electronic communication between the lens and camera, it will maintain metering, autofocus, and VR capabilities. It is constructed of seven elements in five groups and with Nikon's Integrated Coating (IC) you will see improved color and reduced flare. It has one aspherical lens element which virtually eliminates lens aberrations, and is dust and water resistant.