| | | Focal Length | 21mm | | Aperture Ratio | 1 : 4,0 | | Smallest Aperture | 22 | | Lens Construction | 6 groups, 8 elements | | Picture Angle | 90,9 degree | | Aperture Blades | 10 | | Nearest Distance | 0,9 m | | Diameter | 55,8mm | | Length | 45,3 mm | | Weight | 140 g | | Filter Size | 43mm | | Mount | Nikon S | | | | | incl. Finder | | | Type: | 21 mm Reverse Galileo Viewfinder | | Lens construction : | 5 elements, 4 groups | | Magnification: | 0.42 | | Finder diopter: | -1.0 D | | Weight: | 31 g | | |