Ultra-wide-angle lens for serious applications. Easy to hold and carry at 14.3 oz. (405g). Floating rear focusing system. Sharp images are obtained at all subject distances.

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Reviews

Canon EF 20mm f/2.8 USM Lens Review by the-digital-picture.com

So you need an ultra-wide angle lens? My strong recommendation to you - save until you can afford the Canon EF 17-40mm f/4.0 L USM Lens or better yet, the Canon EF 16-35mm f/2.8 L USM Lens. Image quality at 20mm is significantly better with these two lenses. Plus, you get the versatility of a zoom lens with a significantly wider angle focal length available.

If all you can afford is the Canon EF 20mm f/2.8 USM Lens, buy it and enjoy it. It will capture memories just fine.

Canon EF 20mm f/2.8 USM – Review by photozone.de

Since the release of the EOS system we have seen several updates to Canon ultra-wide zoom lenses but they didn’t 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 a little dated by now – less so regarding its mechanical qualities but optically it isn’t really something special anymore. Most good quality zooms can match its quality by now. The fix focal lens can still convince regarding distortions and CAs. Resolution-wise it is still a good to very good lens for sure – just not more than that. Vignetting is a little on the high side at f/2.8 which is a little disappointing for a full format lens tested on an APS-C DSLR. So unless you require an affordable, large aperture lens in this range there’re few reasons left to favor this lens over e.g. the Canon EF 17-40mm f/4 USM L.

Canon EF 20mm f/2.8 USM Interchangeable Lens Review by ephotozine.com

As a wide-angle lens for cropped sensors, this lens falls a little short, with virtually all of the standard zooms giving a wider angle of view. However, on the full frame sensors that Canon are now producing, this lens still warrants its place in their line-up. Nice results combined with ease of use will ensure it will stay there for some time to come.

In summary, the positive points of the EF 20mm f/2.8 USM are:

• Good build and finish
• Nice focal length on Full Frame cameras
• Silent and fast autofocus.
• Good image quality

The negative points are:

• Not that useful on cropped sensors.
• Stiff manual focus ring (on example tested)
• Distortion worse than on modern designs (minor point)
• Hood not included with lens