The AF-S Nikkor 58mm f/1.4G is a premium standard lens for Nikon's full frame SLRs, which is designed to give the best possible imaging performance even when shot at maximum aperture. Nikon says it's highly corrected for coma, meaning that point highlights are rendered correctly right across the frame at large apertures. The lens is also specifically designed to give an attractive rendition of out-of-focus regions of the frame. It can also be used on Nikon's DX format SLRs, on which it will behave like a classic 85mm 'portrait' lens.