Technical Specifications
Focale20mm
Ouverture maximalef/1.8
Ouverture minimalef/16
Construction optique13 elements in 11 groups (including 2 ED lens elements, 2 aspherical lens elements, and lens elements with Nano-Crystal coatings)
Angle de champNikon film SLR and FX-format D-SLR cameras: 94°, Nikon DX-format D-SLR cameras: 70°
Distance minimale de mise au point
0.2m (0.66ft) from focal planeNombre de lamelles de diaphragme7 (rounded diaphragm opening)
Diamètre de fixation pour filtre77mm (P = 0.75mm)