- No compromise lens performance
- 9-blade circular aperture creates evocative out-of-focus areas and soft backgrounds
- Excellent focal range, speed and usability
- Bright f/2.8 aperture for low light shooting
A lightweight super telephoto lens that offers superb image quality
Combining ultra-high performance with a portable design, this is the world’s lightest 400mm f/2.8 lens. It’s superb for action and wildlife, and for photographers who travel and work on location.
Superb quality from an advanced optical design
- Ultra-high image quality, with high sharpness right across the frame
- Fluorite lens elements virtually eliminate chromatic aberration and boost resolution and contrast
- Flare and ghosting is virtually eliminated by our Subwavelength structure coating (SWC)
- Create superb out-of-focus backgrounds, with a fast f/2.8 aperture and nine-bladed diaphragm
The lightest 400mm f/2.8 lens in the world
- An advanced optical formula reduces weight, making this the world’s lightest 400mm f/2.8 design
- Ultra-portable design is ideal for location work
- As an L-series lens, the EF 400mm f/2.8L IS III is built to withstand the rigours of professional use
- Protective weather sealing guards against dust and moisture, while fluorine coatings help cleaning
- Thermal insulation coating maintains image quality when shooting in hot sunny conditions
Keep subjects in sharp focus as they move around the frame
- focusing is fast and quiet, thanks to a ring-type USM autofocus motor and high-speed CPU
- Create pull-focus effects when shooting video, using power focus controls and focus presets
- Make instant adjustments using full-time manual focus control
- Manual focus is electronically controlled, for customizable focusing speed and extreme precision
Stay sharp when shooting handheld or in low light
- Preserve sharpness when shooting handheld or in low light, thanks to a five-stop Image Stabilizer
- The lens’s lightweight design allows it to be used handheld for longer periods of time
React quickly, using customisable controls
- Lock, stop and recall focus using customisable AF control buttons
- Shoot instinctively, with controls that fall naturally under your fingers with the camera at your eye
Canon EF 400mm f/2.8L IS III USM Specifications
| Lens construction | 17/13 (elements/groups) |
| Mount | Canon EF Mount |
| Optical image stabiliser | 5-stops AF actuator |
| Focal Length | 400mm focal length |
| Aperture Type | 9-bladed diaphragm |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/32 |
| Minimum focusing distance | 2.5m |
| Maximum magnification | 0.17 |
| Diagonal angle of view | 5°10′, 3°30′, 6°10′ |
| Filter Size | 52mm Drop in (drop-in) |
| Overall Length | 163 x 343 mm |
| Weight | 2840g |
| Offers: N/A |
| Offer Category: Camera Lenses |
| Offer Product Type: Canon Lenses EF mount |
| Autofocus: Yes |
| Aperture ring: N/A |
| Constant Aperture: Yes |
| Lens CIPA Image stabilization rating: N/A |
| Colour: N/A |
| Diameter (mm): 163 |
| Length (mm): 343 |
| Weight (g): 2840 |
| Distance scale: Yes |
| DoF scale: N/A |
| Elements: 17 |
| Environmental Sealing: N/A |
| Focus distance limiter: Yes |
| Focal length: 400 mm |
| Focus method: N/A |
| Filter Thread: N/A |
| Full time manual: Yes |
| Groups: 13 |
| Hood supplied: Yes |
| Lens Image stabilization: N/A |
| Lens mount: N/A |
| Lens Materials: N/A |
| Maximum focal length: 400 |
| Maximum magnification: 0.17 |
| Maximum aperture (number): 2.8 |
| Maximum aperture (text): N/A |
| Max Format size: N/A |
| Minimum focal length: 400 |
| Lens Minimum focus distance (m): 2.5 |
| Minimum aperture (number): 32 |
| Minimum aperture (text): N/A |
| Motor type: N/A |
| Number of diaphragm blades: 9 |
| Power zoom: N/A |
| Special elements / coatings: Super UD + fluorite elements + Air Sphere + Super Spectra + fluorine coatings |
| Tripod collar: Yes |
| Lens type: N/A |
| Wide/Tele: N/A |
| Lens Level: N/A |
| Best For: N/A |
| Best For Holiday and Landscape: N/A |
| Best For Interior and Architecture: N/A |
| Best For Fashion and Portrait: N/A |
| Best For Macro and Still Life: N/A |
| Best For Astro: Yes |
| Best For Street: N/A |
| Best For Wildlife and Sport: Yes |
| Zoom lock: N/A |
| Zoom method: N/A |
| Notes: N/A |













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