Lens system
Component for	SLR
Lens type	Telephoto lens
Lens structure (elements/groups)	17/13
Aperture range (F-F)	2.8 - 32
Fixed focal length	400 mm
Minimum aperture number	32
Maximum aperture number	2.8
Lens mount interface	Canon EF
Image stabilizer

Performance
Auto focus
AF actuator	Ring USM
Camera brands compatibility	Canon

Design
Product colour	Black, White

Weight & dimensions
Length	343 mm
Weight	2.84 kg
Diameter	16.3 cm
Filter size	52 mm