Nikon 70-200mm f/2.8G ED-IF AF-S VR Zoom Nikkor Lens for Nikon Digital SLR Cameras
Nikon 70-200mm f/2.8G ED-IF AF-S VR Zoom Nikkor Lens for Nikon Digital SLR Cameras
Nikon AF-S Zoom-Nikkor 70-200mm 1:2.8 G IF-ED VR Lens
Professional, compact high-aperture, high-performance telephoto AF-S from the G-type with advanced and highly effective technique for Vibration Reduction / avoidance. Two modes of image stabilization.
ED glass - an essential element of Nikkor telephoto lenses
Nikon developed ED glass (Extralow dispersion) with the aim of enabling the production of lenses with superior sharpness and color correction by minimizing chromatic aberration. Simply put, it is the chromatic aberration is a type of image and color dispersion that occurs when light rays move at different wavelengths through optical glass. In the past, were required to correct this problem for telephoto lenses, special optical elements, which showed anomalous dispersion properties, in particular calcium fluoride crystals. Fluorite is relatively unstable and reacts to temperature fluctuations, which may have a negative impact by changing the refractive index of the lens to focus. Therefore, developers and engineers at Nikon have in common efforts to develop ED glass, which has all the advantages, but none of the disadvantages of kalziumfluoritbasiertem glass. As a result of this innovation, Nikon several types of ED glass has developed for different lenses. They stand on even the largest aperture settings by an astonishing sharpness and excellent contrast. Thus Nikkor lenses are the EDSerie evidence of the paramount importance of Nikon in innovation and performance of lenses.