Nikon D300 User Manual page 499

Preparing the Camera for GPS Usage
There are several screens used in setting up the D300(S) for
GPS use. First, a decision should be made about the exposure
meter when a GPS unit is plugged into the camera. While the
GPS is plugged in, the camera's exposure meter must be
active to record GPS data to the image. You'll have to do one
of two things:
▪ Set the exposure meter to stay on for the entire time that
a GPS is plugged in, which, of course, will increase
battery drain.
▪ Press the
activate the exposure meter before finishing the
exposure. If you just push the
down quickly and the GPS is not active and locked, it
won't record GPS data to the image. The meter must be
on before GPS will seek satellites.
Figure 5-33 shows the screens used to set the meter to stay on
the entire time the GPS is connected or to act normally and
shut down after the
setting C2 – defaults to 6 seconds).
You can select either
does:
▪ Enable (default) – The meter turns off after the
meter off
GPS data will only be recorded when the exposure meter
is active, so allow some time for the GPS unit to
re-acquire satellites before taking a picture.
Shutter-release button
Auto meter off
Enable
delay expires, as set in
499
halfway down to
Shutter-release button
delay expires (see
or Disable. Here's what each
Custom setting
Custom
Auto
C2.