Solution
Functions often used on the EOS R can be set to the RF lens and mount adapter’s control ring.
1. Set the camera's power switch to ⋖ON⋗.
2. Press the ⋖ ⋗ button.
3. Turn the ⋖ ⋗ dial, to choose either [ ], [ ], [ ], [ ], [ ] or [ ].
4. Press the ⋖ ⋗ button to display the menu screen.
5. Press the ⋖ ⋗ button to select the [ ] tab.
6. Turn the ⋖ ⋗ dial to select the [ ] tab.
7. Select [Customize dials] and then press the ⋖ ⋗ button.
8. Select [ ] and then press the ⋖ ⋗ button.
9. Select function and press the ⋖ ⋗ button.
10. Once returned to step 8’s screen, press the⋖ ⋗ button.
The control ring will show the function selected in step 9.
11. Settings are complete once returned to the menu screen.
Caution
Customized operations are not cleared if you select [ : Clear all Custom Func. (C.Fn) ]. To clear the settings, select [ : Clear customized settings ].