Double the reach of your F mount lenses with the Nikon AF-S Teleconverter TC-20E III and its 2x magnification for use with FX and DX format 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. Features 2.0x teleconverter extends the reach of AF-S lenses by 100% with only two-stop loss in exposure. Advanced design maintains the optical quality of NIKKOR lenses as well as fully supports exposure metering and VR image stabilization capabilities. Nikon Integrated Coating and aspherical element control distortion, aberrations, flare, and ghosting for optimal image quality. Durable, weather-resistant barrel supports use in harsh conditions. Nikon F lens mount supports both FX and DX format AF-S NIKKOR lenses. Lens Compatibility For full compatibility with Nikon lenses, please visit the Nikon USA website.