Focal length : 180mm
Maximum aperture : 3.5
Minimum Aperture : 32
Diaphragm Blade Number : 7
Lens Construction : 14 elements in 11 groups
Angle of View : 14o
Minimum Focus Distance : 0.47m (18.5")
Macro Magnification Ratio : 1:1
Filter size : 72
Weight : 920g (32.5oz.)
Dimensions (D x L) : 84.8mm x165.7mm (3.3in x 6.5in)