Sony a 9 Manual De Instrucciones página 36

Examples of the focusing frame display
The focusing frame differs as follows.
When focusing on a larger area
When focusing on a smaller area
• When [Focus Area] is set to [Wide] or [Zone], the focusing frame may
switch between "When focusing on a larger area" and "When focusing
on a smaller area" depending on the subject or situation.
• When you attach an A-mount lens with a Mount Adaptor (LA-EA1 or
LA-EA3) (sold separately), the focusing frame for "When focusing on a
smaller area" may be displayed.
When focus is achieved automatically based on the whole range of the
monitor
• When you use a zoom function other than the optical zoom, the
[Focus Area] setting is disabled and the focusing frame is shown by the
dotted line. The AF operates with priority on and around the center area.
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