EF 400mm F4 DO IS II USM

The 400mm f/4.0 DO IS USM is Canon''s breakthrough in multi-layer diffractive optical lens technology. This sheds new ground for sports, nature and wildlife photographers, giving exemplary results in a size previously unheard of for a lens of such a focal length and aperture. Simply put, the size and ease of handling must be seen to be understood.

Flourite & UD elements eliminate secondary spectrum chromatic aberration

High-diffraction optics provide class-leading low size and weight

AF Stop function shuts off autofocus when an obstruction appears

Dust & moisture resistance made exceptional by magnesium alloy lens barrel and new rear gasket at lens mount

Two-stage image stabilization; dual-axis camera shake correction or vertical axis only(for panning)

3-stage focus limiter

Focus preset function allows for returning to a specifically set focus by turning a ring in front of the focus ring

Full-time manual focus override

Specifications

Performance
Focal Length 400 mm
Aperture Maximum: f/4
Minimum: f/32
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of View 6°
Minimum Focus Distance 11.48'' (3.5 m)
Magnification 0.12x
Maximum Reproduction Ratio 1:8.3
Groups/Elements 13/17
Diaphragm Blades 8
Features
Image Stabilization Yes
Autofocus Yes
Tripod Collar Yes
Physical
Filter Thread 52 mm
Dimensions (DxL) Approx. 5.0 x 9.1" (12.70 x 23.11cm)
Weight 4.27 lb (1.94kg)