Focal length: 500mm
Maximum aperture: 4.5
Minimum Aperture: 32
Lens Construction :12 Elements in 9 Groups
Angle of View: 5 degree
Number of Diaphragm Blades: 9
Minimum Focusing Distance: 400cm/157.4 in.
Maximum Magnification: 1:7.7
Filter Size: 46mm (drop-in type)
Dimensions (D x L): 123mm x 350mm (4.8 in. x 13.8 in.)
Weight: 3150g (111.1oz)