| Aperture | EF 135mm f/2 L | EF 70-200mm f/2.8 L IS | EF 70-300mm f/4.5-5.6 DO IS |
| f/8 |  |
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| f/5.6 |  |
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| f/5 |  |
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| f/4 |  |
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| f/2.8 |  |
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| f/2 |  |
EF 70-300mm f/4.5-5.6 DO IS USM Bokeh
All photographs taken with Canon 20D focused on object in foreground. Focus was locked on foreground object and field moved so that background filled viewfinder. Images resized in Photoshop and accentuated by using autocontrast.
| Aperture | EF 135mm f/2 L | EF 70-200mm f/2.8 L IS | EF 70-300mm f/4.5-5.6 DO IS |
| f/8 | |
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| f/5.6 | |
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| f/5 | |
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| f/4 | |
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| f/2.8 | |
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| f/2 | |