Nikon calls this the Nikon AFP DX NIKKOR mm f/4563G ED VR AFP Stepper autofocus motor for quiet and fast autofocus DX Only works on DX cameras;Buy Nikon AFP DX NIKKOR mm f/4563G ED VR Lens featuring FMount Lens/DX Format, mm (35mm Equivalent), Aperture Range f/4563 to f/32, One ExtraLow Dispersion Element, Super Integrated Coating, Pulse Stepping Motor AF System, VR Image Stabilization, Access Lens Settings in Camera Menu, Rounded 7Blade Diaphragm Review Nikon nullFeaturing an 18 element optical design in 14 groups that includes one extralow dispersion element, along with an electronic diaphragm, the mm f/4556E VR AFP is indeed sharper (as you will see on the comparison page), significantly faster (in autofocus performance) and 65 grams lighter when compared to the "G" version Nikon 70 300mm Vr Dx Af P Review Af-p nikkor 70-300mm f/4.5-6.3g ed review