Nikon D90 User Manual page 331

IJ
Check the view in the monitor.
To magnify the view in the monitor and check focus,
press the <f{ button. Press the
E{~
button to zoom out.
Nlkon
I
~
I
E{~
and
<t<
buttons
Choose the focus point.
Wide and normal autofocus: Rotate the focus selector lock
to
"e"
and use the multi selector to move the focus
point to any point in the frame. Return the focus
selector lock to "L" when selection is complete.
kon
Focus selector lock Focus point
33