Sony DSCRX10M2.CE3 Manual page 143

Examples of functions that can only be assigned with custom
keys
Standard:
Depending on the options selected in [Focus Area] or [Center Lock-on AF], the available
functions varies when pressing the key.
When you press the key when the [Focus Area] is set to [Wide] or [Center] and [Center
Lock-on AF] is [On], [Center Lock-on AF] will activate.
The camera will automatically focus while pressing the key when the [Focus Area] is
[Wide] or [Center], [Focus Mode] is set to other than [Manual Focus], and [Center Lock-
on AF] is set to [Off].
Note
Some functions cannot be assigned to certain keys.
[131] How to Use
convenient use
Function of the control wheel
Once you assign a function to the control wheel, you can perform that function by simply
turning the wheel when the shooting information screen is displayed.
1. MENU →
desired setting.
The functions that can be assigned are displayed on the setup item selection screen.
[132] How to Use
convenient use
Function of the AEL button
Once you assign a function to the AEL button, you can perform that function by simply
pressing the AEL button when the shooting information screen is displayed.
(Custom Settings) → [Custom Key Settings] → [AEL Button] → desired
1. MENU→
setting.
Using shooting functions
(Custom Settings) → [Custom Key Settings] → [Control Wheel] →
Using shooting functions
Customizing the shooting functions for
Customizing the shooting functions for