Sony ILCE-1 Help Manual page 357

Help Guide
Interchangeable Lens Digital Camera
ILCE-1
α1
REC w/ Shutter (movie)
You can start or stop recording movies by pressing the shutter button, which is bigger and easier to press than the
MOVIE (Movie) button.
MENU → (Setup) → [Operation Customize] → [
1
Menu item details
On:
Enables movie recording using the shutter button when the shooting mode is set to [Movie] or [S&Q Motion].
Off:
Disables movie recording using the shutter button.
Hint
When [ REC w/ Shutter] is set to [On], you can use the shutter button to start or stop recording movies on an external
recording/playback device using [REC Control].
Note
When [ REC w/ Shutter] is set to [On], you cannot focus by pressing the shutter button halfway down during movie recording.
Related Topic
Shooting movies
5-025-537-14(1) Copyright 2021 Sony Corporation
357
REC w/ Shutter] → desired setting.