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Canon EF 20 mm f2.8 USM

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EF 20 mm f2.8 USM
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The light-gathering device of a camera, typically containing a group of compound lenses. Lenses come in different lengths, with very long lens used for long-distance photography.
camera lenses
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Included since: 15 Jul 2005
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Info modified on: 29 Mar 2017 11:15:20
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Long product name Canon EF 20 mm f2.8 USM :
The short editorial description of Canon EF 20 mm f2.8 USM

EF 20mm f/2.8 USM

Canon EF 20 mm f2.8 USM:
The official marketing text of Canon EF 20 mm f2.8 USM as supplied by the manufacturer
This lens is an EF 20mm 2.8 USM.
- Lens construction: 11 elements in 9 grps
- Diagonal angle of view: 94°
- Focus adjustment: Rear focusing system with USM
- Closest focusing distance: 0.25m / 0.8ft
- Ultra-wide-angle lens for serious applications.
- Easy to hold and carry at 405 grams.

Floating rear focusing system. Sharp images are obtained at all subject distances

Ultra-wide-angle lens for serious applications. Easy to hold and carry at 405g. Floating rear focusing system. Sharp images are obtained at all subject distances.
Short summary description Canon EF 20 mm f2.8 USM:
This short summary of the Canon EF 20 mm f2.8 USM data-sheet is auto-generated and uses the product title and the first six key specs.
Canon EF 20 mm f2.8 USM, 14.3 oz (405 g)
Long summary description Canon EF 20 mm f2.8 USM :

Canon EF 20 mm f2.8 USM. Weight: 14.3 oz (405 g)

This is an auto-generated long summary of Canon EF 20 mm f2.8 USM based on the first three specs of the first five spec groups.
Weight & dimensions
Weight *
14.3 oz (405 g)
Source Testseek summary Average rating
Testseek has collected 9 expert reviews for Canon EF 20 mm f2.8 USM and the average expert rating is 73 of 100. The average score reflects the expert community’s view on this product. Click below and use Testseek to see all ratings, product awards and conclusions.
Source Review comments Score
The conclusion for this review comes down to recommendations, and we have to segregate the audience into a couple of camps. For full-frame digital SLR or film users, the 20mm ƒ/2.8 shows off its poorer performance issues, especially for sharpnes...
The Canon EF 20mm f/2.8 USM ($539.99 direct) is a fairly compact wide-angle lens for Canon D-SLR cameras. When used on a full-frame body, the lens can capture stunning landscapes, and its distortion characteristics are controlled enough for use for arc...
Good Ultra-wide field of view, Sharp when stopped down, Minimal distortion...
Bad Slightly soft at f/2,8, Prone to color fringing...
Bottom line The Canon EF 20mm f/2.8 USM lens delivers an ultra-wide field of view on full-frame cameras, and is quite sharp once you stop down to f/4...
20mm prime lenses aren't overly popular anymore these days - most people prefer ultra-wide zoom lenses or prime lenses with an even more extreme focal length. However, consider me to be a relic. I think that 20mm is actually a sweet spot in this focal...
Bottom line The Canon EF 20mm f/2.8 USM is not a bad lens but it shows that its design dates back to the early 90s. The technical resolution is actually pretty good with a very sharp image center and pretty good borders. The corners are also very decent at medium...
This Canon EF 20mm f/2.8 USM is Canon's only fixed autofocus ultrawide lens other than the (1991-2007) and (2007-today). Canon has made this 20mm f/2.8 since 1992, so you can , as well as . This 20mm is very good optically...
The Canon EF 20mm f/2.8 USM was released back in 1992 and its one of the older designs in the current lens lineup. On APS-C DSLRs the field-of-view is equivalent to 32mm so it looses its ultra-wide character towards a moderate wide-angle lens here...
Bottom line Since the release of the EOS system we have seen several updates to Canon ultra-wide zoom lenses but they didnt really care about their fix-focals in this range ever since their initial release back in the early 90s. The Canon EF 20mm f/2.8 USM feels...
The Canon EF 20mm f/2.8 USM Lens fits in a nice wide angle focal length space below the ultra-common 24-something and 28-something zoom lenses. There is a noticeable FOV (field of view) difference between 20mm and 24/28mm. People often look for a prim...
Canon EF 20mm f/2.8 USM reviewThe focal length of this prime lens from Canon is on the edge of ultra wide angle when used on a full frame sensor or the 35mm film it was originally designed for. Even on a cropped sensor, it provides a good angle of cove...
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