Nikon
TC-20E II
2× teleconverter
This teleconverter will increase the focal length of your Nikkor lens by 2×. It is constructed with seven optical elements in six groups, and uses Nikon's Integrated Coatings to maintain image quality. All electronic functions, such as autofocus and vibration reduction, are maintained, however, as there is a loss of two f-stops of light, autofocus may not function with lenses with a slow maximum aperture.