Sony NW-A306 Walkman A Series High-Resolution Digital Audio Player (Black) - Manual (Page 155)

Hint
The same operation is supported using an assignable button assigned with [Push AF/MF].
You can also assign [Push AF Mode] to an assignable button.
You can also assign [Focus Area (AF-S)] to an assignable button.
You can display/hide the focus area frame using [Monitoring] > [Display On/Off] > [Focus Area Ind.(AF-S)] in the camera menu.
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