An incredibly lightweight lens thanks to the use of magnesium alloy in the body. It has superior optical performance and swift autofocus operation with Nikons exclusive built-in SWM Silent Wave Motor and ED Extra-low Dispersion glass elements. Designed for optimum autofocus performance with the Nikon F5, F4, F100, F90X, F90, F80, F70, F65, PRONEA 600i, PRONEA S cameras, as well as the E2/E3- series and D1-series digital cameras, this