Focal length: 18 mm
Maximum aperture: 3.5
Minimum aperture: 22
Focusing range 0.3 m - infinity
Lens Construction: 13 elements in 11 groups
Diagonal Angle of View: 99o
Coverage at close range 44 x 29 cm
Filter thread: M 82 x 0.75
Dimensions (D x L): 87 mm x 84 mm (with caps)
Weight: 470 g