Specifications: 

Lens Construction: 12 groups, 16 elements (2 FLD, 2 SLD, 3 aspherical) 

Angle of View: 75.4° - 34.3°

Number of Diaphragm Blades: 9 (rounded)

Maximum Aperture: F2.8

Minimum Aperture: F22

Minimum Focusing Distance: 19(W) - 38cm (T) / 7.5 (W) - 15 in. (T)

Filter Size: 67mm

Maximum Magnification: 1:3.3 (W) - 1:4.6 (T)

Weight: 470g / 16.6 oz.

Dimensions: 72.2 x 103.5mm / 2.8 x 4.1 in.