Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 701)

GPS Features
GPS Settings
GPS Precautions
GPS features of the camera can be used to geotag images, set the time, and more. The
camera can receive signals from GPS satellites (USA), GLONASS satellites (Russia), and
the Quasi-Zenith Satellite System “Michibiki” (Japan).
Caution
Geotag information may not be recorded or inaccurate information may be
recorded where GPS signal coverage is poor, such as in the following places.
• Indoors, underground, near or between buildings, in tunnels or forests
• Near high-voltage power lines or mobile phones operating on the 1.5 GHz band
• When the camera is carried in a bag or other container
• When traveling long distances
• When traveling through different environments
• Even in conditions other than these, GPS satellite movement over time may
interfere with geotagging and cause missing or inaccurate geotag information.
The information may also indicate that the camera was used along a route
even if it was used at one location.
Elevation is not as accurate as latitude or longitude, due to the nature of GPS.
Inside the camera, the GPS antenna is near the front of the hot shoe. Although
GPS signals can also be acquired with a Speedlite attached, acquisition sensitivity
will be slightly lower.
When carrying the camera in a bag or other container, make sure it is face-up with
nothing covering it.
Set the camera time and date as accurately as possible. Also set the correct time
zone and daylight saving time for the shooting location.
Fewer shots are available in locations with poor signal coverage.
Remaining battery capacity may be lower when GPS features are used. Charge the
battery as needed, or consider purchasing a spare battery (sold separately).
Others may be able to locate or identify you by using information in your geotagged
still photos or movies. Be careful when sharing these images with others, as when
posting images online where many people can view them.
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