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) 2.5m/ 8.20ft
Construction (Groups Elements) 13-17
Diameter x Length 163 x 343mm
Distance Scale o
Drive System Ring-type USM
Filter Size 52mm (Drop-in)
Maximum Magnification (x) 0.17
Minimum Aperture 32
Number of Diaphragm Blades 9
Anti-dust and Moisture Supported
Weight 2 840g