Sony UWP-D27 2-Person Camera-Mount Wireless Omni Lavalier Microphone System (UC90: 941 to 960 MHz) - Manual (Page 85)

Note
[Focus Area] is locked to [Wide] in the following situations:
[Intelligent Auto]
The focus area may not light up during continuous shooting or when the shutter button is pressed all the way down at once.
When the mode dial is set to (Movie) or (S&Q Motion) or during movie shooting, [Tracking] cannot be selected as the
[Focus Area].
You cannot execute functions assigned to the control wheel or the C button while moving the focusing frame.
Related Topic
Tracking subject (Tracking function)
Touch Operation
Adjusting the focus area settings to the camera’s orientation (horizontal/vertical) (Switch V/H AF Area)
Registering the current focus area (AF Area Registration) (still image)
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