Altitude above sea level during flight

[T'Jingles]

There is no "GPS altitude" that your drone understands or could calculate.
It only uses GPS for location, not height.


You can tell where an image file was captured, but you can't tell it's "GPS altitude".
You can calculate an altitude above sea level if you know the location of the launch point and the relative height when the image was captured.

Simple .. know the relative height at which the before shot was taken.
Launch from the same place and fly to the same height for your after photos.
If you need to show a height above sea level, just calculate that.


What you think is a "GPS altitude" doesn't come from GPS and is very inaccurate.
Don't even consider using that number for anything.

I fly a M30T with 3 cameras on board (Wide, Zoom and IR) and often take pictures with all 3 at the same time. Looking at "GPS Altitude" in EXIF data often shows the images taken from different altitudes, sometimes as much as 10 meters. Given the cameras are actually in the same case attached to the gimbal and are at most a coupe of centimeters apart and the pictures taken within milliseconds of each other, I would suggest the usefulness of the data for comparison purposes, particularly for legal purposes, is non-existent. Just sayin'.