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.
NOTE
Customized operations are not cleared if you select [

: Clear all Custom Func. (C.Fn) ]. To clear the settings, select [

: Clear customized settings ].