Focal length: 10mm
Maximum aperture: 2.8
Minimum Aperture: 22
Lens Construction: 12 Elements in 7 Groups
Angle of View: 154 degrees (180o for Nikon, 167o for Canon)
Number of Diaphragm Blades: 7 Blades
Minimum Focusing Distance: 13.5cm/5.3 in.
Maximum Magnification: 1:3.3
Filter: Insertion-type gelatin filter into rear of the lens
Dimensions (D x L): 75.8mm x 83.1mm (3.0 in. x 3.3 in.)
Weight: 16.8 oz (475g)