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Rent NowThe Canon EF 400mm f/4 DO IS II USM is a super telephoto lens designed for Canon EF-mount cameras, built to deliver brilliant high-speed performance with minimal glare and superb image quality at roughly half the weight of a traditional 400mm f/2.8. It’s positioned as the ultimate lightweight, hand-holdable sports and wildlife lens, ideal for professionals and serious photographers who don’t want or need the low-light performance of an f/2.8 super-telephoto prime but still demand top-tier image quality.
Optically, the lens employs gapless dual-layer diffractive optical (DO) elements, a design that improves diffraction efficiency and reduces flare while keeping the lens remarkably small and light for its focal length and aperture. These elements are arranged with a large-diameter ground aspherical lens and a UD (Ultra-low Dispersion) lens, together delivering chromatic aberration correction surpassing that of fluorite lenses along with a new level of sharpness and clarity that exceeds the original EF 400mm f/4 DO IS USM. New coatings, including a Sub Wavelength Coating, help reduce ghosting, ensure excellent color balance, and minimize fingerprints on the front and rear elements, and a rounded 9-blade diaphragm contributes to smooth, pleasing bokeh.
Autofocus is handled by a ring-type Ultrasonic Motor (USM), delivering extremely fast, quiet focusing along with full-time manual focus override. A Power Focus mode enables smoother, more controlled focus transitions during video recording via a dedicated Playback Ring, which can also be used to set and quickly recall a specific Focus Preset distance. Canon’s Image Stabilizer provides a 4-stop advantage and can detect horizontal and vertical panning motion, compensating only for movement in the opposite direction, making the lens practical for handheld use in good light.
Build quality includes rugged magnesium alloy construction that is fully weather-sealed against dust and moisture, along with a fluorine coating on the front element for fast raindrop beading and smudge resistance. The lens has a minimum focusing distance of 3.3m (10.8 ft.), and uses a drop-in filter system with a 52mm filter thread rather than a front filter, keeping the front element compact.
As a full-frame-compatible lens, the EF 400mm f/4 DO IS II USM produces its full telephoto field of view on full-frame Canon bodies and an effective 640mm equivalent field of view on APS-C bodies.
Key Features
– 400mm f/4 super telephoto lens for Canon EF mount
– Gapless dual-layer diffractive optics (DO)
– One aspherical element and one UD element
– Sub Wavelength Coating and fluorine-coated front element
– Ring-type Ultrasonic Motor (USM) autofocus with Power Focus mode
– Focus Preset system
– Image Stabilizer with 4-stop correction and panning detection
– Rounded 9-blade diaphragm
– Weather-sealed magnesium alloy construction
– Minimum focusing distance of 3.3m (10.8 ft.)
– Drop-in filter system, 52mm filter thread
– Lightweight, compact design relative to focal length/aperture
– Compatible with full-frame and APS-C Canon EF-mount cameras
