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Quick answer
The Canon EF 200-400mm f/4L IS USM Extender 1.4x is a telephoto to super telephoto telephoto zoom lens covering 200-400mm at f/4.0 for the Canon EF mount. Its moderate maximum aperture works best in good light or with a higher ISO.
About this lens
The Canon EF 200-400mm f/4L IS USM Extender 1.4x is a telephoto zoom lens covering 200-400mm at f/4 for Canon EF mount cameras, from the Canon L series with Image Stabilizer and ultrasonic-motor autofocus. The range suits sports, wildlife, events and portraits.
Canon EF 200-400mm f/4L IS USM Extender 1.4x specifications
- Brand
- Canon
- Mount
- Canon EF
- Focal length
- 200-400mm
- Maximum aperture
- f/4.0
- Lens type
- Telephoto Zoom
What can you shoot with the Canon EF 200-400mm f/4L IS USM Extender 1.4x?
At 200-400mm this is a telephoto to super telephoto telephoto zoom, which typically suits:
- Sports and action
- Wildlife and birds at moderate distance
- Compressing distant landscapes
- Wildlife and birds
- Motorsport and field sports
Its moderate maximum aperture works best in good light or with a higher ISO.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 200–400mm | 5.2–10.3° | 6.2–12.3° |
| APS-C | 1.6x | 320–640mm | 3.2–6.4° | 3.9–7.7° |
Frequently asked questions
What mount does the Canon EF 200-400mm f/4L IS USM Extender 1.4x use?
It uses the Canon EF mount, so it fits Canon EF cameras directly.
What is the focal length of the Canon EF 200-400mm f/4L IS USM Extender 1.4x?
It zooms across 200-400mm with a maximum aperture of f/4.0. That makes it a telephoto to super telephoto lens.
Is the Canon EF 200-400mm f/4L IS USM Extender 1.4x a prime or a zoom lens?
It is a zoom lens covering 200-400mm, so you can reframe without moving. Its maximum aperture is f/4.0.
What is the Canon EF 200-400mm f/4L IS USM Extender 1.4x equivalent on a crop sensor?
On APS-C (1.6x crop) it frames like 320–640mm on full frame, with a 3.2–6.4° horizontal and 3.9–7.7° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Canon EF 200-400mm f/4L IS USM Extender 1.4x fit?
Any Canon EF-mount camera, including Canon EOS 1D X, Canon EOS 5D, Canon EOS 5D Mark II, Canon EOS 5D Mark III, and Canon EOS 5D Mark IV and 7 more.
Alternatives for Canon EF from other brands
All Canon EF lensesSame mount, overlapping focal range, closest maximum aperture first.
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