Looking for Typhoon H pilots in South America willing to share a few unaltered jpg format photos made with the Typhoon H and CGO3+. They will be used in a project and not disseminated on the web or social media. Please respond if interested.
EXIF allows different notations, but this seems to be default.
For Altitude there is also a GPSAltitudeRef. That can be "Below sea lever" or "Above sea level". But Yunnec puts relative altitude in the EXIF. I have found:
GPSAltitudeRef: Below sea level
This was at home. We are 520m above sea level here.
Also, you don’t get a good relative reference for altitude until motors are armed. One of the ones I sent with the TH on the ground and before motors armed had an altitude of over 4.2 million meters. That was taken in my courtyard of my home in Florida. Local altitude is about 25 meters. I got a bit of a chuckle out of it.