(User’s Manual – D300S page 201; D300 page 203)
Nikon has wisely included the ability to GEO-tag your images with GPS location data. Now when you shoot a spectacular travel image, you can rest assured that you’ll be able to find that exact spot next year. The D300(S) will record the following GPS information about your location in the metadata of each image:
Heading (North, South, etc.)
The GPS unit you choose must be compatible with the National Marine Electronics Association (NMEA0183) version 2.01 or 3.01 data format.
I bought a Garmin eTrex Legend GPS unit to use with my D300 since the eTrex series is mentioned on page 201 of the D300 user’s manual.