Focal length 45 mm
Maximum aperture F2.8
Minimum aperture F32
Lens construction 9 elements in 8 groups (with one ED glass element)
Picture angle 51o (maximum 66o when fully shifted)
Closest focus distance 0.253 m
Maximum reproduction ratio 1/2
No. of diaphragm blades 9 (rounded)
Filter / attachment size 77 mm
Diameter x length 83 x 112 mm (3.2 x 4.4 in)
Weight (approx.) 740 g (1.6 lb)