NOTE It is not possible to customize functions assigned to the operation buttons in Basic Zone modes. To customize the functions, set the Mode Dial to a Creative Zone mode.
How to customize the operation buttons 1. Set the power switch to <ON>. 2. Set the Mode Dial to a Creative Zone mode.  3. Under the [  ] tab, select [C.Fn III: Operation/Others], then press <SET>.  4. Select [5]:[Custom Controls], then press <SET>. The Custom Controls screen will appear.  5. Select a camera button or dial, then press <SET>. The name of the camera control and the assignable functions will be displayed.  6. Select a function, then press <SET>.  7. When you press <SET> to exit the setting, the screen in step 5 will reappear. Press the <MENU> button to exit. NOTE With the screen in step 3 displayed, you can press the <  > button to cancel the Custom Control settings. Note that the [ C.Fn III -5: Custom Controls] settings will not be canceled even if you select [ : Clear all Custom Func. (C.Fn)].
Assignable Functions to Camera Controls | Function |  |  |  |  |  * |  |  |  |  | | AF |  | Metering and AF start |  | | |
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|  | AF stop |
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|  | ONE SHOT  AI SERVO |
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|  | AF point direct selection |
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| | | Exposure |  | Metering start | |
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|  | AE lock/FE lock |
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|  | AE lock |
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| | | AE lock (while button pressed) | |
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|  | AE lock (hold) |
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|  | FE lock |
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|  | Set ISO speed (hold button, turn ) |
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|  | Shutter speed setting in M mode |
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|  | Aperture setting in M mode |
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| | Externalflash |  | Flash exposure compensation |
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| | Image |  | Image quality |
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|  | Picture Style |
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| | Operation |  | Depth-of-field preview |
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|  | IS start |
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|  | VF electronic level |
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|  | Menu display |
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|  | No function (disabled) | | | |
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* The AF stop button [ ]is provided only on super telephoto IS lenses.
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