Nikon 20mm f/2.8 AIS Super Wide Angle Manual Focus NIKKOR Lens. The Nikon 20mm f/2.8 AIS Super Wide Angle Manual Focus NIKKOR Lens is a versatile ultra-wide angle lens for general photography. It has a compact ultra-wide angle lens construction and 94 degree picture coverage with edge-to-edge sharpness (70 degree with Nikon DX format). Its […]