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Canon EF- 24-105mm f/4L IS USM resolution using Canon 400D / XTi
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To measure and compare the Canon 24-105mm's resolving power on a cropped-frame body, we photographed the Enhanced Digital Camera
Resolution Chart with it and a number of lenses, each set to 35mm f8 using
a Canon EOS-400D / XTi in Aperture Priority mode. The 400D / XTi was set to Large Fine JPEG mode and its Standard Picture Style.
The crops are taken from the original images, saved as High Quality JPEGs
in Photoshop CS2 and presented here at 100%. Each number represents 100
lines per picture height (lpph), so a figure of 20 means a resolution of
2000 lpph. |
With 2150 lpph of horizontal and vertical resolution, the Canon EF 24-105mm delivers as good a result as we've measured on the EOS 400D / XTi body. That said, you'll achieve the same resolving power in this test with the EF 17-40mm or EF-S 17-85mm. All three improve on the EF-S 18-55mm kit lens in this test by almost 10%, proving the benefit of fitting a higher quality optic. Now let's see how the EF 24-105mm performs in terms of corner sharpness. |
Canon EF 24-105mm f/4.0L IS USM |
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Canon EF-S 17-85mm f/4-5.6 IS USM |
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2150 lpph, 24-105mm at 35mm, f8, 100 ISO |
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2150 lpph, 17-85mm at 35mm, f8, 100 ISO |
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Canon EF-S 18-55mm f/3.5-5.6 |
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Canon EF 17-40mm f/4.0L USM |
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2000 lpph, 18-55mm at 35mm, f8, 100 ISO |
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2150 lpph, 17-40mm at 35mm, f8, 100 ISO |
Canon EF 24-105mm f/4.0L IS USM |
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Canon EF-S 17-85mm f/4-5.6 IS USM |
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2150 lpph, 24-105mm at 35mm, f8, 100 ISO |
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2150 lpph, 17-85mm at 35mm, f8, 100 ISO |
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Canon EF-S 18-55mm f/3.5-5.6 |
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Canon EF 17-40mm f/4.0L USM |
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2100 lpph, 18-55mm at 35mm, f8, 100 ISO |
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2150 lpph, 17-40mm at 35mm, f8, 100 ISO |
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