Focal length: 18 mm
Maximum aperture: 4
Minimum aperture: 22
Diagonal Angle of View: 98o
Closest Focusing Distance: 0.5 m
Lens Construction: 10 elements in 8 groups
Image ratio at close range: 1 : 23
Coverage at close range 56 cm x 84 cm
Filter: M 58 x 0.75
Dimensions (D x L): 65 mm x 71 mm
Weight: 350 g