Nikon D3S - Manual (Page 120)

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Focus Point Selection
The D3S offers a choice of 51 focus
points that together cover a wide
area of the frame. The focus point
can be selected manually, allowing
photographs to be composed with
the main subject positioned almost
anywhere in the frame (single-
point and dynamic-area AF), or automatically (auto-area AF; note
that manual focus point detection is not available when auto-area
AF is selected). To select the focus point manually:
1
Rotate the focus selector
lock to
●.
This allows the multi selector to
be used to select the focus
point.
2
Select the focus point.
Use the multi selector to select
the focus point. The center
focus point can be selected by
pressing the center of the multi
selector.
The focus selector lock can be
rotated to the locked (L)
position following selection to
prevent the selected focus
point from changing when the multi selector is pressed.
AF-area mode selector
Focus selector lock