Focal length: 16mm
Maximum aperture: 2.8
Minimum aperture: 22
Minimum Focus Distance : 8.4" (2m)
Number of Blades : 7 aperture blades
Lens construction: 11 elements in 8 groups
Magnification: x 0.15
Dimensions (D x L): 2.15/16" x 2.5/8" (75mm x 66.5mm)
Weight: 14oz (400g)