Sony a7R IV Manual De Instrucciones página 42

Touch Focus
With [Touch Focus], you can use touch operations to specify the
position where you want to focus, when [Focus Area] is a setting other
than [Flexible Spot], [Expand Flexible Spot], [Tracking: Flexible Spot],
or [Tracking: Expand Flexible Spot]. Select MENU 
[Touch Operation]  [On] beforehand.
MENU 
 [Touch Focus].
Specifying the position where you want to focus in the
still image mode
You can specify the position where you want to focus using touch
operations. After touching the monitor, press the shutter button halfway
down to focus.
 Touch the monitor.
• When shooting with the monitor, touch the position where you want
to focus.
• When shooting with the viewfinder, you can move the position of
the focus by touching and dragging on the monitor while looking
through the viewfinder.
• To cancel focusing with touch operations, touch
center of the control wheel if shooting with the monitor, and press
the center of the control wheel if shooting with the viewfinder.
 Press the shutter button halfway down to focus.
• Press the shutter button all the way down to shoot images.
GB
42
(Camera Settings 2)  [Func. of Touch Operation]
(Setup) 
or press the