I'm working on an application to read the
exif georeferenced metadata of some photos.
I would like to know all the possible values of the attribute
GPSMapDAtum. Do you know where to find a list with all the standard values?
It's maybe a little unclear, but from page 79 of the May 2019 revision of the EXIF spec, it looks like that can be an arbitrary string of any length:
It's also not required, only strongly recommended.
A good place to look would be the EPSG Geodetic Parameter Registry
A search by type (using GeodeticDatum) and area (using 'world') gives 34 results:
As for 'standard' values, my Garmin GPSMAP 64s offers me the following datums list:
- Tristan Ast '68
- Viti Levu 1916
- WGS 72
- WGS 84