Canon EF 400mm f/4.0 DO IS USM

Announced Sep 6, 2000 •
Telephoto prime lens | Canon EF
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Canon EF 400mm f/4 DO IS Lens
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Product description
Announced Sep 6, 2000
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The Canon EF 400mm F4.0 DO IS USM was the first Canon lens to offer diffractive optical lens technology, which is designed to give high optical quality in a considerably more compact and lighter package than would be possible using conventional elements. As well as the fancy optics, this lens also features image stabilization for a 2-stop shutter speed advantage, a ring-type ultrasonic focus motor and dust and moisture-sealing. Optically, this innovative lens is bettered by Canon's more conventional telephoto primes, but the 400mm DO's compact dimensions and comparatively light weight make it a good choice for sports and wildlife photography.

Product timeline
Article, Sep 6, 2000
Quick specs
Lens type Prime lens
Focal length 400 mm
Image stab. Yes
Lens mount Canon EF
Max aperture F4.0
Min aperture F32.0
Min focus 3.50 m (137.8)
Max magnification 0.12×
Weight 1940 g (4.28 lb)
Length 233 mm (9.16)

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