Nikkor 35mm Lenses Behind every lens is a history of Nikon quality and innovation that has consistently set new standards of excellence. Nikon s most remarkable innovation may be its consistent use of the Nikon F lens mount which makes your camera compatible with literally hundreds of Nikkor lenses. Even when you re using the most powerful Nikkor super-telephoto lens, your pictures will be clear and sharp, with exellent color rendition. That s because many Nikkor telephoto and super-telephoto lenses are made with ED glass, a Nikon innovation that virtually eliminates the color fringing common with regular lens glass in longer focal lengths. Combines the special effects advantages of 180deg. coverage with Nikon s advanced D-type autofocus lens technology. Bright f/2.8 aperture for photographing in dim light or with fast shutter speeds. Full-aperture viewing and metering. Four 39mm filters bayonet onto the back of the lens. High-contrast images even at full aperture. Exceptionally lightweight for a fisheye lens. Built-in lens hood. Wt. 10.1 oz. Dim. 2.5 x 2.2 . Lens Construction: 8 elements in 5 groups Picture Angle: 180 degrees (35mm format), 107 degrees (Nikon DX format) Minimum Focus Distance: 0.85 feet Attachment/Filter Size: Rear bayonet Dimensions (diameter x length - in.): 2.5 x 2.2 inches Weight (oz.): 10.1 oz Nikon Lens Hood: Built-in flower type