A:Answer The Nikon AF-S NIKKOR 85mm f/1.4G has a lower aperture setting, and thereby is faster than an f/1.8 lens. A lower aperture setting allows more light to pass through the diaphragm of the lens, creating more natural exposure and can help to create beautiful bokeh images in which the background is nicely blurred. The AF-S 85mm f/1.4G lens is updated from it's predecessor and has a Nano Crystal Coating to provide inform color balance and contrast while eliminating ghosting and lens flare. For more information on which lens is right for your needs please contact Nikon Support.