Focal length: 400 mm
Maximum aperture: f/2.8
Minimum aperture: f/22
Lens construction: 14 elements in 11 groups (with 3 ED glass elements and one Nano Crystal Coat) and one meniscus protective glass element
Picture angle: 6o10' (4o00' with DX-format camera)
Closest focus distance: 2.9 m/9.5 ft. (AF), 2.8 m/9.2 ft. (MF)
Maximum reproduction ratio: 1/6.3
Number of diaphragm blades: 9 (rounded)
Filter/attachment size: 52 mm
Focusing: Internal Focusing (IF) system; autofocus with a built-in SWM and manual focus
Diameter x length (extension from lens mount): Approx. 159.5 x 368 mm/6.3 x 14.5 in.