Canon EF 400mm f/5.6L USM
Canon EF

Overview
The Canon EF 400mm f/5.6L USM is a prime lens that stands out for wildlife and sports photography due to its impressive reach and lightweight design. As part of Canon’s esteemed L-series, this lens is built not just for quality, but also for durability, making it an excellent choice for those who want to capture far-off subjects while on the move.
One of the most appealing features of the Canon EF 400mm f/5.6L is its exceptional sharpness. When paired with a Canon body, you can expect images that are crisp and full of detail. This lens truly shines in good lighting conditions, where it produces stunning colors and contrast. The bokeh, while a secondary consideration in a lens primarily aimed at action and distance photography, is smooth and pleasing, helping to separate the subject from the background nicely.
Another advantage of this lens is its relatively lightweight build. Weighing in at approximately 1,200 grams (2.65 lbs), it’s manageable enough for handholding, especially in comparison to other lenses with similar focal lengths. This portability factor gives photographers the flexibility to shoot quickly and maneuver easily—something that is essential in fast-paced settings like wildlife photography.
However, it's important to acknowledge a couple of downsides. The f/5.6 maximum aperture, while reasonable, can be a bit limiting in lower light scenarios. In situations where the light dips, you might find yourself struggling to maintain fast enough shutter speeds without raising the ISO too high, which can introduce noise into your images. Additionally, the lens lacks image stabilization, which is a standardized feature in many modern telephoto lenses. While its lightweight design helps with hand-holding, without stabilization, it may still be challenging to capture sharp shots in less than ideal conditions.
Pros and Cons
Pros
- Exceptional sharpness and image quality
- Lightweight design, making it easy to handle
- Excellent for wildlife and sports photography
- Smooth bokeh for subject isolation
Cons
- f/5.6 maximum aperture can be limiting in low light
- No image stabilization
Verdict
The Canon EF 400mm f/5.6L USM is an excellent choice for photographers looking for a lightweight and sharp telephoto lens, particularly in outdoor settings with ample light. While it may not be as versatile in dimmer conditions due to the f/5.6 aperture and the absence of stabilization, its pros certainly outweigh the cons for those focused on capturing sharp, detailed images from a distance. If you prioritize reach and weight over extreme low-light performance, this lens is undoubtedly a worthy addition to your gear.
Technical Specifications
Which cameras does the Canon EF 400mm f/5.6L USM fit?
The Canon EF 400mm f/5.6L USM is a full-frame lens for Canon EF cameras. On full-frame bodies it uses the whole sensor; on APS-C Canon EF cameras its field of view equals 640 mm in full-frame terms.
Canon EF cameras
- Full frame:
- Canon EOS-1D X Mark III, Canon EOS 6D Mark II, Canon EOS-1D X Mark II, Canon EOS 5D Mark IV, Canon EOS 5Ds, Canon EOS 5Ds R, Canon EOS 5D Mark III, Canon EOS 6D, Canon EOS-1D C, Canon EOS-1D X, Canon EOS 5D Mark II
- APS-C:
- Canon EOS 850D (Rebel T8i), Canon EOS 90D, Canon EOS 250D (Rebel SL3), Canon EOS 4000D (3000D, Rebel T100), Canon EOS 2000D (1500D, Rebel T7), Canon EOS 800D (Rebel T7i), Canon EOS 77D, Canon EOS 200D (Rebel SL2), Canon EOS 80D, Canon EOS 1300D (Rebel T6), Canon EOS 750D (Rebel T6i), Canon EOS 760D (Rebel T6s), Canon EOS 7D Mark II, Canon EOS 1200D (Rebel T5), Canon EOS 70D, Canon EOS 700D (Rebel T5i), Canon EOS 100D (Rebel SL1), Canon EOS 650D (Rebel T4i), Canon EOS 60Da, Canon EOS 600D (Rebel T3i), Canon EOS 1100D (Rebel T3), Canon EOS 550D (Rebel T2i), Canon EOS 60D, Canon EOS 7D, Canon EOS 500D (Rebel T1i), Canon EOS 50D, Canon EOS 450D (Rebel XSi), Canon EOS 1000D (Rebel XS)
With the Canon Mount Adapter EF-EOS R the lens can also be used on Canon RF cameras.
With the Canon Mount Adapter EF-EOS M the lens can also be used on Canon EF-M cameras.
Canon EF 400mm f/5.6L USM compared
Key specs side by side with the most similar Canon EF lenses.
| Lens | Canon EF 400mm f/5.6L USM | Canon EF 400mm F4 DO IS II USM | Canon EF 400mm f/4.0 DO IS USM | Canon EF 400mm F2.8L IS III USM |
|---|---|---|---|---|
| Focal length | 400 mm | 400 mm | 400 mm | 400 mm |
| Max. aperture | f/5.6 | f/4 | f/4 | f/2.8 |
| Weight | 1,250 g | 2,100 g | 1,940 g | 2,840 g |
| Filter diameter | 77 mm | 52 mm | 52 mm | 52 mm |
| Min. focus distance | 350 cm | 330 cm | 350 cm | 250 cm |
| Length | 257 mm | 233 mm | 233 mm | 343 mm |
| Autofocus | yes | yes | yes | yes |
| Image stabilization | no | yes | yes | yes |
Canon EF 400mm f/5.6L USM: FAQ
Does the Canon EF 400mm f/5.6L USM have autofocus?
Yes, the Canon EF 400mm f/5.6L USM has autofocus.
Does the Canon EF 400mm f/5.6L USM have image stabilization?
No, the Canon EF 400mm f/5.6L USM has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.
How much does the Canon EF 400mm f/5.6L USM weigh?
The Canon EF 400mm f/5.6L USM weighs 1,250 g. It is 257 mm long with a diameter of 90 mm.
What filter size does the Canon EF 400mm f/5.6L USM use?
The Canon EF 400mm f/5.6L USM takes 77 mm screw-in filters.
How close can the Canon EF 400mm f/5.6L USM focus?
The minimum focus distance of the Canon EF 400mm f/5.6L USM is 350 cm, measured from the sensor plane.
Is the Canon EF 400mm f/5.6L USM a full-frame lens?
Yes, the Canon EF 400mm f/5.6L USM covers full frame. On APS-C cameras its field of view equals 640 mm in full-frame terms.
Similar lenses
Canon EF 400mm F4 DO IS II USM
400mm · f/4
Canon EF 400mm f/4.0 DO IS USM
400mm · f/4
Canon EF 400mm F2.8L IS III USM
400mm · f/2.8
Canon EF 400mm f/2.8L IS II USM
400mm · f/2.8
Canon EF 400mm f/2.8L IS USM
400mm · f/2.8
Tokina SZX Super Tele 400mm F8 Reflex MF
400mm · f/8
Sigma 500mm F4.5 EX DG HSM
500mm · f/4.5
Canon EF 500mm f/4.0L IS II USM
500mm · f/4
Related guides
What does the f mean in camera lenses?
When it comes to photography, understanding the basics of f-stop is essential. F-stop is a critical component of a camera lens that…
How to clean a camera lens
Keeping your camera lenses clean is essential for getting clear, sharp, and high-quality images. Even the smallest speck of dust, dirt, or…
All camera lens types explained: Uses and functions
In this article, we'll explore the various types of camera lenses, their defining features, and when to use them. We'll also cover the…