Nikon D300 User Manual page 207

4
Lock flash level.
After confirming that the flash ready
indicator
(~)
is displayed in the
viewfinder, press the Fn button. The
flash will emit a monitor preflash to
determine the appropriate flash level.
Flash output will be locked at this level
and FV lock icons
(m)
will appear in the
control panel and viewfinder.
:25
FS.b
p
"0
cD
5
Recompose the photograph.
6
Take the photograph.
Press the shutter-release button the rest of the way down to
shoot. If desired, additional pictures can be taken without
releasi ng FV lock.
7
Release FV lock.
Press the
Fn
button to release FV lock. Confirm that the FV lock
icons
(m)
are no longer displayed in the control panel and
viewfinder.
IT
181