Sony ILCE-7S - Manual (Page 51)

1. Press the MOVIE button to start recording.
2. Press the MOVIE button again to stop recording.
Note
To adjust the shutter speed and aperture value to the desired settings, set the shooting
mode to (Movie).
If you use a function such as zoom while shooting a movie, the noise of the product
operating will be recorded. The sound of the MOVIE button operating may also be
recorded when you press the MOVIE button to stop recording.
For the continuous shooting time of a movie recording, refer to "Recordable time of
movies." When movie recording is finished, you can restart recording by pressing the
MOVIE button again. Recording may stop to protect the product depending on the
temperature of the product or the battery.
When shooting, the sound of the shoulder strap hooks (triangular hook) could be
recorded, depending on the situation used.
When recording movies with low ISO sensitivity, if you point the camera at a very bright
light source, high intensity areas on the monitor may be recorded in darker tones.
[31] How to Use Shooting Selecting a shooting mode
List of mode dial functions
You can select the desired shooting mode by turning the mode dial.