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Canon

Canon EF 400mm f/5.6L USM

A 1993 L-series 400 mm f/5.6 super-telephoto prime with ring USM, a focus range selector and a removable tripod ring.

Used from
£619
Check price at Wex Photo Video
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Used
Wex Photo Video
Wex Photo Video used
£619
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Core
Released
1993
Focal Length
400mm
Aperture
f/5.6
Compatible Mount
Canon EF
Filter Size
77mm
Dimensions
90mm diameter × 256.5mm length
Weight
1250g
Weather Sealed
No
Optics & Focus
AF Motor
Ultrasonic Motor (USM)
Optical IS
None (relies on body IS if available)
Aperture Blades
8
Magnification
0.11x
Min. Focus Distance
3.5m

Select up to 2 cameras to compare against the EF 400mm f/5.6L USM. It's always pinned as the baseline.

Select 1–3 cameras to compare

24 cameras compatible with the Canon EF mount.

EOS 400D
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EOS 50D
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EOS 50D
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EOS 5D
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EOS 5D
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EOS 5D Mark II
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EOS 5D Mark II
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EOS-1D
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EOS 6D
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EOS 6D
Used from £80
EOS-1D Mark III
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EOS-1D Mark III
Used from £102
📷
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EOS-1Ds
Used from £102
EOS-1D Mark IV
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EOS-1D Mark IV
Used from £102
EOS 5D Mark III
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EOS 5D Mark III
Used from £146
EOS-1D X
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EOS-1D X
No UK price today
EOS 6D Mark II
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EOS 6D Mark II
Used from £278
EOS-1D X Mark II
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EOS-1D X Mark II
No UK price today
EOS 5D Mark IV
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EOS 5D Mark IV
Used from £278
EOS 5DS
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EOS 5DS
Used from £337
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EOS-1D X Mark III
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URSA Mini Pro 4.6K G2
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GearScore™ — Suitability by Genre

Base score — computed from verified specs for an enthusiast shooting photo and video. Camera Match adjusts it for your skill level and priorities.

Portrait
5.8
Street
4.2
Travel
3.8
Wedding & Events
5.2
Filmmaking
3.5
Documentary
4.1
Sports & Action
7.4
Landscape
4.4
Wildlife
6.8
Casual
4.2
Food
3.9
Architecture
4.6
Underwater
4.5
✅ Great For
⚡
Sports & Action 7.4 Strong on autofocus, focal length and burst-speed support.
⚠️ Not Ideal For
🎬
Filmmaking 3.5 Held back by video handling and focal length.
✈️
Travel 3.8 Held back by portability and focal length.
🍽️
Food 3.9 Held back by close focusing and focal length.
📝 How suitability scores are calculated GearScore™ genre scores are calculated from this camera's verified specifications — autofocus, sensor, weight, weather sealing and more — weighted by what matters for each type of photography. Where a spec sheet misses something (e.g. a manual-focus rangefinder for street), we apply a documented editorial adjustment. Scores are not based on customer reviews. See our full methodology →
Price History — EF 400mm f/5.6L USM
New prices, last 30 days