EF 400mm f/4 DO IS USM
The EF 400mm f/4 DO IS USM features a multilayer diffractive optical lens technology that makes the lens small and lightweight yet optically superb quality. Built-in image stabilization feature offers up to two stops of image correction. The lens has a fast max aperture of f/4 making it ideal for fast action" sports and wildlife photography.
Canons breakthrough multi-layer diffractive optical lens technology provides photographers with superior super-telephoto performance in a smaller and lighter design with enhanced correction for chromatic aberrations. Weve also added our highly effective Image Stabilization system that gives the equivalent effect of a shutter speed two stops faster. And" its built to our professional standards with fast AF" full-time mechanical focus and dust and water-resistant construction.
Focal Length & Maximum Aperture
17 elements in 13 groups
Diagonal Angle of View
Inner focusing system with USM
Closest Focusing Distance
3.5m / 11.5 ft.
Max. Diameter x Length, Weight
5.0" x 9.2", 4.3 lbs. / 128.0 x 232.7mm, 1940g