Ricoh PENTAX K-3 Mark III Faq page 15

Auto Area
Zone Select
Select
Expanded Area AF (S)
Expanded Area AF (M)
Expanded Area AF (F)
Select (S)
Spot
Push the lever in to reset the AF points.
Memo:
・The selected AF points can be checked also in the viewfinder.
Caution:
・The selected AF points differ depending on the lens attached.
Restrictions on the Selection of AF Points
When the following lenses, some AF points on the left and right sides cannot be used while shooting with
the viewfinder.
See RICOH IMAGING website for the latest information.
Automatically selects the optimum focusing points out all AF
points.
Automatically selects the optimum focusing points out of the
selected 21 AF points.
Sets the AF points to the user selected five points.
Sets the AF points to the user selected five points.
When the subject happens to move out of the selected AF points
after being focused, 16 peripheral points are used as back-up points
for autofocus.
This setting is available only with [Continuous AF]
Sets the AF points to the user selected five points.
When the subject happens to move out of the selected AF points
after being focused, 60 peripheral points are used as back-up points
for autofocus.
This setting is available only with [Continuous AF]
Sets the AF points to the user selected five points.
When the subject happens to move out of the selected AF points
after being focused, 96 peripheral points are used as back-up points
for autofocus.
This setting is available only with [Continuous AF]
Performs autofocus with fewer AF points than those for [Select].
Sets the AF point to the center point.
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