400 mm Lenses
A Canon 400mm lens is designed to give professional sports and wildlife photographers the freedom they need on location. These 400 mm lenses offer portable, lightweight design with a focal length that gets you right next to the action without having to get uncomfortably close.
COMPARISON CHART |
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| Name | Canon EF 400mm f/5.6L USM Lens | Canon EF 400mm f/4 DO IS II USM Lens | Canon EF 400mm f/2.8L IS III USM Lens |
| IMAGE SIZE | - | - | Full Frame |
EQUIVALENT FOCAL LENGTH 
The focal length you would need for a 400mm film camera to achieve the same angle of view
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- | - | - |
| ANGLE OF VIEW (HORIZONTAL, VERTICAL, DIAGONAL)
A way of measuring what you see through the lens. The wider the angle of view, the more you can see in the frame. |
5°10', 3°30', 6°10' | 5°10', 3°30', 6°10' | 5°10', 3°30', 6°10' |
| LENS CONSTRUCTION (ELEMENTS/GROUPS)
Elements: Glass pieces within the lens module itself
Groups: One or more elements closely connected to achieve a specific task in the optical design |
7/6 | 18/12 | 17/13 |
| NUMBER OF DIAPHRAGM BLADES
The more blades a diaphragm has, the more circular the shape of the aperture as it closes. The shape of the blades also determines circular aperture. The more circular the aperture, the more circular the out-of-focus details in the image (bokeh) will be. |
8 | 9 | 9 |
| MINIMUM APERTURE
The smallest you can make the aperture to still get light to the camera |
32 | 32 | 32 |
| MINIMUM FOCUS DISTANCE (METER)
This is the closest the lens can get to your subject before it cannot focus, measured from the subject to the sensor plane |
3.5 | 3.3 | 2.5 |
| MAXIMUM MAGNIFICATION (X)
How big an object will look in a final image, with 1x meaning life-size reproduction on the sensor, which when enlarged will show very high detail |
0.12 | 0.13 | 0.17 |
| DISTANCE INFORMATION | Yes | Yes | Yes |
| IMAGE STABILISATION
Counteracts camera shake, allowing for a sharper image |
- | 4 stops | 5 |
| AF (AUTO-FOCUS) ACTUATOR
Automatically focuses the lens on a subject. This uses various methods like STM, USM. |
Ring USM | Ring USM | Ring USM |
| DUST/MOISTURE RESISTANCE | - | Yes *1 | Yes |
| FILTER DIAMETER (MM) | 77 | 52 Drop in | 52 |
| MAX. DIAMETER X LENGTH (MM) | 90 x 256.5 | 128 x 232.7 | 163 x 343 |
| WEIGHT (G) | 1250 g | 2100 g | 2840 g |
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