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Canon

Canon EF 20mm f/2.8 USM

A 1992 full-frame ultra-wide prime: 20 mm f/2.8 with ring USM and a 72 mm filter thread, at 405 g.

Used from
£119
Check price at Wex Photo Video
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Used
Wex Photo Video
Wex Photo Video used
£119
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eBay
eBay used
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£120
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MPB
MPB used
Inspected used stock · 12-month warranty
£174
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Core
Released
1992
Focal Length
20mm
Aperture
f/2.8
Compatible Mount
Canon EF
Filter Size
72mm
Dimensions
77.5mm diameter × 70.6mm length
Weight
405g
Weather Sealed
No
Optics & Focus
AF Motor
Ultrasonic Motor (USM)
Optical IS
None (relies on body IS if available)
Aperture Blades
6
Magnification
0.14x
Min. Focus Distance
25cm

Select up to 2 cameras to compare against the EF 20mm f/2.8 USM. It's always pinned as the baseline.

Select 1–3 cameras to compare

24 cameras compatible with the Canon EF mount.

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EOS-1D Mark IV
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EOS-1D Mark IV
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EOS 5D Mark III
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EOS-1D X
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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
5.1/10
Street
5.9/10
Travel
4.6/10
Wedding & Events
5.0/10
Vlogging & Video
6.0/10
Filmmaking
4.2/10
Documentary
4.5/10
Landscape
6.1/10
Casual
4.6/10
Food
3.5/10
Architecture
6.0/10
Astrophotography
6.9/10
Underwater
5.9/10
✅ Great For
🌌
Astrophotography 6.9 Strong on focal length, distance scale and portability.
⚠️ Not Ideal For
🍽️
Food 3.5 Held back by close focusing and focal length.
🎬
Filmmaking 4.2 Held back by video handling and optical stabilisation.
🎥
Documentary 4.5 Held back by video handling and optical stabilisation.
📝 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 →
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