Focal Length: 25 mm
Maximum aperture: 2.8
Minimum aperture: 22
Diagonal Angle of View : 82o
Lens Construction: 9 elements in 7 groups
Closest Focusing Distance: 0.5 m
Image ratio at close range : 1:18
Coverage at close range : 43 cm x 65 cm
Filter-Mount : M 46 x 0.75
Dimensions (D x L): 53mm x 71mm
Weight : 260 g