Focal Length: 180mm
Maximum Aperture: 2.8
Minimum Aperture: 22
Closest Focusing Distance: 5 ft. (1.5m)
Filter Size: 72mm
Angle of View: 9o
Lens Construction: 8 Elements in 6 Groups
Maximum Reproduction Ratio: 1:6.6
Dimensions (D x L): 78.5mm x 144mm (3.1in. x 5.7in.)
Weight: 26.8oz. (760g)