Canon EF 400mm f/2.8L IS III USM Lens

Model #3045C002

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Weight 6.25 lb / 2840 g
Dimensions (DxL) 6.42 x 13.50" / 163 x 343 mm
Filter Thread Drop-In: 52 mm


Focal Length 400mm
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Camera Mount Type Canon EF
Aperture Maximum: f/2.8Minimum: f/32
Diaphragm Blades 9, Rounded
Optical Design 17 Elements in 13 Groups
Maximum Reproduction Ratio 1:5.88
Magnification 0.17x
Minimum Focus Distance 8.20' / 2.5 m
Angle of View 6° 10'


Autofocus Yes
Image Stabilization Yes
Tripod Collar Yes Removable - rotating
Expert Reviews
The digital picture.34755376
1 February 2019

The Canon EF 400mm f/2.8L IS III is an absolutely-no-compromises lens created by a company with a long history of delivering best-available camera lenses. This lens is a roll-up of the best-available technology, including the technology utilized in the lens' design as well as the innovative...

Roberts camera.34955828
11 September 2018

The EF 400mm f/2.8L IS III USM features a 9-blade, circular aperture to help create gorgeous, evocative out-of-focus areas and soft backgrounds. With an incredible level of control over background blur, the 9-blade circular aperture helps create intimacy and intensity in both photos and videos for...

2 March 2020

The EF 400mm f/2.8L IS III USM is a flagship lens for Canon in many ways: reach, speed, usability and price.

27 February 2019

The Canon EF 400mm f/2.8L IS III USM is a great lens, although at a very high price from which there is no escape. It handles well, it has that fantastic f/2.8 aperture, it is teeming with features. If you need it and can afford it, then Canon users have an incredible 400mm option to consider.

  • +

    Excellent, even sharpness, Virtually no CA, Low distortion, Lighter than similar lenses, Fast f/2.8 aperture, Large range of shooting options, Lovely bokeh, Image stabilisation

  • -

    Understandably high price, Lightest, but still quite heavy, Large lens

User Reviews
B h photo.34921152
28 March 2019

I used the Ver II for 5 years with great success. I loved that lens with exception of the weight. I am 64 years old and hand hold frequently and the weight was starting to be a burden.I decided the 2.2 lb. reduction would be a huge help with the Ver III so I purchased one.

13 January 2019

I purchased this lens as soon as it came it and I have been using it for various sports events. I have been shooting varsity high school soccer games 3-4 times a week at different times of the day.

4 May 2020

Following a medical death sentence I chose to enjoy the time I had left by purchasing any lens I felt would improve my knowledge and photography. To date I have not been disappointed.

13 July 2019

I own the 400 2.8 IS v1 and borrowed this lens to use at the Indy 500 this year. It was tack sharp and 5.6 pounds lighter than the version I own. The weight savings alone makes this worth the upgrade.

B h photo.34921152
18 February 2019

And Im a 220 lb 69 year old weakling. I do all hand shooting. It is so light I dont even realize it is there. Feels like my 14mm lens. Credit the movement and rebalancing of the weight towards the shooter for this.Takes great pictures. No complaints. Got everything I thought I was getting and more.

B h photo.34921152
12 January 2019

This lens is just outstanding. I have been spending most of my time testing with the 1.4x III and 2x III extenders. The 2x is just outstanding on this lens (800mm). I only have the 1dx Mark II so results may vary on other bodies. It is the best performing lens with the 2x I have used so far.

11 January 2019

The price tag on this lens will clearly scare someone away but trust me when I tell you it is worth every cent! I love this lens and it’s a true work horse! I am heavy in my sports season and currently shooting varsity soccer. I have tested this lens and it has never failed me once!

Product Highlights
  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/32
  • Super UD and Fluorite Elements
  • Super Spectra and Air Sphere Coatings
  • Ring-Type Ultrasonic Motor AF System
  • Customizable Electronic Focusing Ring
  • Optical Image Stabilizer
  • Weather-Sealed Design, Fluorine Coating
  • Detachable, Rotatable Tripod Collar
  • Rounded 9-Blade Diaphragm
In The Box
  • Canon EF 400mm f/2.8L IS III USM Lens
  • E-180E Lens Cap
  • Lens Dust Cap E (Rear)
  • ET-155 (WIII) Lens Hood
  • 52mm Drop-in Gelatin Filter Holder (Black)
  • Lens Case 400E
  • Limited 1-Year Warranty
Still Have Questions?
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