EF400mm f/2.8L IS III USM


Angle of View (Diagonal) 6°10’
Angle of View (Horizontal) 5°10’
Angle of View (Vertical) 3°30’
Closest Focusing Distance (m, ft) 2.5 / 8.20
Construction (Groups Elements) 13-17
Diameter x Length (mm) (Approx.) 163 x 343
Distance Scale o
Drive System Ring-type USM
Filter Size (mm) 52 (Drop-in)
Max. Magnification (x) 0.17
Min. Aperture 32
No. of Diaphragm Blades 9
Anti-dust and Moisture Supported
Weight (g) (Approx.) 2840