Focal length: 15mm
Maximum aperture: 2.8
Minimum Aperture: 22
Lens Construction: 7 Elements in 6 Groups
Angle of View: 180 degrees
Number of Diaphragm Blades: 7 Blades
Minimum Focusing Distance: 15cm/5.9 in.
Maximum Magnification: 1:3.8
Filter size: Rear (Gelatin filter)
Dimensions (D x L): 73.5mm x 65mm (2.9 in. X 2.6 in.)
Weight: 370g (13.0 oz.)