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Canon EF-S 10-22mm f/3.5-4.5 USM geometry comparison (shortest focal length)
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10-22mm EF-S at 10mm f8 (16mm equiv)
Distortion: 3.59% barrel |
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To measure and compare the Canon 10-22mm's
geometric distortion we photographed a test chart consisting of a grid pattern,
using it and a number of rival lenses.
The lenses were tested at
their widest focal lengths with an aperture of f8 using a Canon EOS-400D in
Aperture Priority mode.
The images were analysed with Imatest using 5th
Order line calculation and the full areas presented here at a reduced resolution. |
| The image above was taken with the Canon EF-S 10-22mm at 10mm f8. Barrel distortion was measured at 3.59% which is remarkably low considering the extreme wide angle coverage at this focal length. It's roughly comparable to the distortion you'll experience with the EF-S 18-55mm when it's zoomed-out, and a significant improvement over the EF-S 17-85mm at 17mm. It's also worth comparing against the EF 17-40mm tested on a full frame body, which delivers coverage almost as wide (17mm actual versus 16mm equivalent). In our EF 17-40mm review, geometric distortion at 17mm on an EOS 5D was measured at 6.39% - considerably higher. An impressive result here for the EF-S 10-22mm. |
Canon EF-S 17-85mm f/4-5.6 IS USM |
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Canon EF-S 18-55mm f/3.5-5.6 |
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Canon EF-S 17-55mm f/2.8 IS USM |
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17-85mm EF-S at 17mm f8
Distortion: 5.71% barrel |
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18-55mm EF-S at 18mm f8
Distortion: 3.35% barrel |
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17-55mm EF-S at 17mm f8
Distortion: 2.87% barrel |
Canon EF-S 10-22mm f/3.5-4.5 USM geometry comparison (longest focal length)
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10-22mm EF-S at 22mm f8 (35mm equiv)
Distortion: 0.24% barrel |
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To measure and compare the Canon 10-22mm's
geometric distortion we photographed a test chart consisting of a grid pattern,
using it and a number of rival lenses.
The lenses were tested at
their longest focal lengths with an aperture of f8 using a Canon EOS-400D in
Aperture Priority mode.
The images were analysed with Imatest using 5th
Order line calculation and the full areas presented here at a reduced resolution. |
| The image above was taken with the Canon EF-S 10-22mm at 22mm f8. While most lenses exhibit pincushion distortion when zoomed-in, the EF-S 10-22mm showed barrelling. This however isn't that surprising considering the lens is still quite wide even when zoomed-in, and more importantly the actual degree of distortion at just 0.24% is very low. Judging from this and the above result, the EF-S 10-22mm is a good performer when it comes to geometric distortion, which will come as a relief to anyone shooting buildings indoors or out. |
Canon EF-S 17-85mm f/4-5.6 IS USM |
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Canon EF-S 18-55mm f/3.5-5.6 |
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Canon EF-S 17-55mm f/2.8 IS USM |
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17-85mm EF-S at 85mm f8
Distortion: 0.967% pincushion |
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18-55mm EF-S at 55mm f8
Distortion: 0.389% pincushion |
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17-55mm EF-S at 55mm f8
Distortion: 1.09% pincushion |
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