Sony Cyber-shot DSC-RX100 IV - Manual (Page 92)

Menu item details
AF/MF Control Hold:
Switches the focusing mode while the button is held down.
AF/MF Ctrl Toggle:
Switches the focusing mode until the button is pressed again.
Note
You cannot set the [AF/MF Control Hold] function to [Left Button] or [Right Button].
[73] How to Use Using shooting functions Adjusting the focus
AF Illuminator (still image)
The AF illuminator supplies fill light to focus more easily on a subject in dark surroundings.
The red AF illuminator allows the product to focus easily when the shutter button is pressed
halfway, until the focus is locked.
1. MENU
→
(Camera Settings
) → [
AF Illuminator]
→ desired setting.
Menu item details
Auto:
Uses the AF illuminator.
Off:
Does not use the AF illuminator.
Note
You cannot use [ AF Illuminator] in the following situations:
In movie mode
In [Sweep Panorama] mode
When [Focus Mode] is set to [Continuous AF].
When [Scene Selection] is set to the following modes:
[Landscape]
[Sports Action]
[Night Scene]
[Pet]
[Fireworks]
The AF illuminator emits a very bright light. Although there is no health hazard, do not
look directly into the AF illuminator at close range.