Groups
12
AF Motor
Ring Usm
Elements
16
Weight
3850g
Length mm
343
IBIS Modes
3
IBIS Stops
4
Model Code
EF400MM-F2.8L-IS-II-USM
Stabilized
Yes
Diameter mm
163
Max Aperture
f/2.8
Min Aperture
f/32
Discontinued
Yes
Min Focus Distance
270cm
Weather Sealed
Yes
Aperture Blades
9
Introduced
2011
Focal Length (Max)
400mm
Focal Length (Min)
400mm
Filter Drop In mm
52
Max Magnification
0.17