The 20mm f/2.8 D AF lens is a versatile ultra-wideangle lens to general photography.Compact ultra-wideangle lens construction94° (70° with Nikon DX format) picture coverage with edge-to-edge sharpnessClose-Range Correction (CRC) system provides high performance at both near and far focusing distancesCompact ultra-wideangle lens construction94° (70° with Nikon DX format) picture coverage with edge-to-edge sharpnessClose-Range Correction (CRC) system provides high performance at both near and far focusing distances