Hopefully manual focus set to the same distance for the duration of the flight(s)? Changing focus also changes focal-length, so it changes the calibration. Many times the changing focus also changes the distortion of the lens.
Hopefully manual focus set to the same distance for the duration of the flight(s)? Changing focus also changes focal-length, so it changes the calibration. Many times the changing focus also changes the distortion of the lens.