Nikon 14mm f/2.8D ED AF Nikkor Super Wide Angle Lens 

With its 114° picture angle and f/2.8 fast aperture, this lens offers dramatic angle of view in demanding situations. Extra Low Dispersion glass and two Aspheric lens elements ensure superior image quality and compact design. Built-in filter holder accepts gelatin filters.

Specifications
Construction 12 groups /14 elements; 2 Aspheric and 1 ED element
Angle of view 114° with 35mm SLR cameras
90° with digital D1 SLR
APS: 102°
F stop range 2.8-22
Closest Focusing Distance 8 inches
Filter Size Gelatin filter holder at rear of lens
Dimensions (Length x Diameter) 3.4 x 3.3 inches
Weight 23.6 oz
Notes Extra Low Dispersion glass and two Aspheric lens elements