Canon EF-S 10-22mm f/3.5-4.5 USM uniformity comparison (shortest focal length)
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10-22mm EF-S at 10mm f3.5 (16mm equiv)
Mean corner fall-off: 42.3% |
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To measure and compare the Canon 10-22mm's vignetting and light fall-off we photographed a white target with a
highly diffused custom filter using it and a number of rival lenses.
The lenses were tested at their
widest focal lengths with the aperture wide open using a Canon EOS-400D in
Aperture Priority mode.
The images were analysed with Imatest and the full
areas presented here at a reduced resolution. Bigger percentages are better.
The image left was taken with the Canon EF-S 10-22mm lens at 10mm f3.5.
Here the light falls off in the corners to an average of 42.3% of the center
measurement, which while noticeably worse than the kit and EF-S 17-85mm lenses, is not unexpected for such an extreme wide angle lens. Indeed it's worth comparing how a lens with similar wide angle coverage performs on a full frame body: in our EF 17-40mm review using a Canon EOS 5D, the light fell off in the corners to 34.3% of the center measurement. It's also worth pointing out that while the corner light fall-off value of the EF-S 10-22mm is similar to the EF-S 17-55mm, the latter suffers from a much steeper and more noticeable gradient in the far corners, whereas the former is more gentle and less obvious. So not a bad result for the EF-S 10-22mm here considering its extreme coverage. |
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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 f4
Mean corner fall-off: 57.8% |
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18-55mm EF-S at 18mm f3.5
Mean corner fall-off: 68.8% |
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17-55mm EF-S at 17mm f2.8
Mean corner fall-off: 46.8% |
Canon EF-S 10-22mm f/3.5-4.5 USM uniformity comparison (longest focal length)
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10-22mm EF-S at 22mm f4.5 (35mm equiv)
Mean corner fall-off: 55.3% |
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To measure and compare the Canon 10-22mm's vignetting and light fall-off we photographed a white target with a
highly diffused custom filter using it and a number of rival lenses.
The lenses were tested at their
longest focal lengths with the aperture wide open using a Canon EOS-400D in
Aperture Priority mode.
The images were analysed with Imatest and the full
areas presented here at a reduced resolution. Bigger percentages are better. |
The image above was taken with the Canon EF-S 10-22mm lens at 22mm f4.5.
Here the light falls off in the corners to an average of 55.3% of the center
measurement, which again is worse then the kit and EF-S 17-85mm lenses, but not too far behind the EF-S 17-55mm. Once again the gradient is quite gentle and not particularly noticeable in real-life. Interestingly the light fall-off measured for the EF 17-40mm on the full-frame Canon EOS 5D is better than the EF-S 10-22mm when both are zoomed-in. At 40mm it measured a fairly respectable 63.1%. |
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 f5.6
Mean corner fall-off: 77.5% |
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18-55mm EF-S at 55mm f5.6
Mean corner fall-off: 83.8% |
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17-55mm EF-S at 55mm f2.8
Mean corner fall-off: 60.8% |
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