nikon AF-s 300mm F2.8G ED VR ii
The optical diagram of Nikon’s AF-S 300mm f2.8G ED VR II prime telephoto shows the use of elements made from glass with extra-low dispersion (ED) characteristics to correct for chromatic aberrations and enhance sharpness. This diagram also shows the location of lens group which serves as the optical image stabiliser (which Nikon calls ‘Vibration Reduction’ or VR).