Microphone gain.
Can be acquired by camera.getOptions and set by camera.setOptions.
| X | Z1 | V | SC | S |
|---|---|---|---|---|
| All | All | All | --- | --- |
| Value | Description |
|---|---|
| normal | Default |
| megavolume | Set low microphone gain |
| mute | Not record audio data *1 |
(*1) RICOH THETA V firmware v2.50.1 or later, or RICOH THETA X firmware v2.50.2 or later