Sony FDR-AX40 How To Use Manual page 122

Uses the Cinematone function.
Note
When you switch this function on or off, the image will be paused temporarily.
When [ Cinematone] is set to [On], the [Scene Selection] setting changes to [Auto].
When [ Cinematone] is set to [On], the [Picture Effect] setting changes to [Off].
[110] How to Use
Fader
You can record a transition with the following effects adding to the interval between scenes.
Select the desired effect in [STBY] (to fading in) or [REC] (to fading out) mode.
1. - [Camera/Mic] - [
Descriptions of menu items
Off:
Does not use an effect.
White Fader( ):
Fades in/out with the white effect.
A: Out
B: In
Black Fader( ):
Fades in/out with the black effect.
Images recorded using the [Black Fader] effect may appear dark on the index screen.
A: Out
B: In
Note
Menu operations
Camera Settings] - [
Camera/Mic
Fader] - desired setting.