Focal Length & Maximum Aperture
400mm f/2.8
Lens Construction
17 elements in 13 groups
Diagonal Angle of View
06°10'
Focus Adjustment
Manual focus
Closest Focusing Distance
8.20 ft. / 2.5m
Max. Diameter x Length, Weight
Φ6.4 x 13.5 in., approx. 6.26 lbs. / Φ163.0 x 343.0mm, approx. 2840g