Nikon AF-S FX TC-14E III (1.4x) Teleconverter Lens with Auto Focus for Nikon DSLR Cameras 1.4x teleconverter extends the reach of AF-S lenses by 40% with only a one-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 Durable, weather-resistant barrel, along with fluorine-coated front and rear elements, support use in harsh conditions. Nikon F lens mount supports both FX and DX format AF-S NIKKOR lenses. Compatible with select Nikon models. Turn the AF-S NIKKOR 70200mm f/2.8G ED VR into a 98280mm f/4 lens or the AF-S NIKKOR 400mm f/2.8E FL ED VR into a 560mm f/4 lens.