Sony FDR-AX100 - Manual (Page 128)

You can use your smartphone as a wireless remote commander.
1. - [Camera/Mic] - [ Shooting Assist] - [Ctrl with Smartphone].
How to Use Menu operations Camera/Mic
My Button
You can assign functions that you frequently use when recording to one of the My Buttons.
1. - [Camera/Mic] - [ Shooting Assist] - [My Button].
2. Select the menu item that you want to assign to a My Button using / .
3. Select one of the My Buttons to which the menu item will be assigned.
4. Select .
How to Use Menu operations Camera/Mic
Grid Line
You can display the lines and check that the subject is horizontal or vertical.
1. - [Camera/Mic] - [ Shooting Assist] - [Grid Line] - desired setting. 116