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EXIF Data in QField

When using the internal QField camera, images will be geotagged with various EXIF metadata fields. Below is a reference table listing the available EXIF tags, their descriptions, examples, and comments about their usage in QField.

EXIF Tag Descriere Example Comments
Exif.GPSInfo.GPSLatitude The latitude of the location where the image was taken. 47.3769 Stored as a positive value with a reference to N/S (see below).
Exif.GPSInfo.GPSLatitudeRef Latitude reference (N = North, S = South). N Determines whether the latitude is north or south of the equator.
Exif.GPSInfo.GPSLongitude The longitude of the location where the image was taken. 8.5417 Stored as a positive value with a reference to E/W (see below).
Exif.GPSInfo.GPSLongitudeRef Longitude reference (E = East, W = West). E Determines whether the longitude is east or west of the prime meridian.
Exif.GPSInfo.GPSAltitude The altitude above sea level (in meters) where the image was taken. 490 Positive values indicate above sea level; negative values indicate below.
Exif.GPSInfo.GPSAltitudeRef Altitude reference (0 = Below Sea Level, 1 = Above Sea Level). 1 Indicates whether altitude is above or below sea level.
Exif.GPSInfo.GPSImgDirection The direction in degrees in which the camera was facing when the image was taken. 270 Represents the compass direction (0 = North, 90 = East, 180 = South, 270 = West) relative to magnetic north.
Exif.GPSInfo.GPSImgDirectionRef Direction reference (M = Magnetic North). M Specifies whether the direction is relative to magnetic north.
Exif.GPSInfo.GPSSpeed The speed of the device when the image was taken, in kilometers per hour (km/h). 30.5 Captured if the device is moving at the time of image capture.
Exif.GPSInfo.GPSSpeedRef Speed unit (K = kilometers per hour). K Currently, speed is recorded in kilometers per hour in QField.
Exif.GPSInfo.GPSDateStamp The date the image was captured in UTC. 2024:10:06 Date stored in the format YYYY:MM:DD.
Exif.GPSInfo.GPSTimeStamp The time the image was captured in UTC. 14:23:56 Time stored in the format HH:MM:SS.
Exif.GPSInfo.GPSSatellites The number of satellites used for GPS information. 12 Number of GPS satellites that contributed to location accuracy.
Exif.Image.Make The make of the device that captured the image. QField Always set to "QField" to indicate the software used.
Xmp.tiff.Make XMP tag for the device make, also set to QField. QField Similar to Exif.Image.Make, used for compatibility in XMP metadata.

Observații

  • QField captures and stores EXIF metadata automatically when using the internal (i.e. not the native) camera.
  • The coordinates (latitude and longitude) are always stored as absolute values, with the hemisphere indicated by the corresponding reference tags (e.g., GPSLatitudeRef for N/S).
  • Altitude is recorded as a positive or negative value depending on whether the elevation is above or below sea level, with GPSAltitudeRef used to indicate the direction.
  • Date and time stamps are stored in UTC format for consistency across locations.
  • See the corresponding how to fetch geotag exif information into the attribute table section for instructions how to make use of this