Specifications:

Lens Construction: 18 elements in 13 groups 

Angle of View: 84.1°-63.4°

Number of Diaphragm Blades: 9 (rounded)

Maximum Aperture: F2

Minimum Aperture: F16

Minimum Focusing Distance: 28cm / 11.0 in.

Filter Size: 82mm

Maximum Magnification: 1:4.4

Weight: 940g / 33.2 oz.

Dimensions (Diameter x Length): 87.6 x 122.7mm / 3.4 x 4.8 in.