I've replaced my gimbal this year (on an MPP), and switched out up to five lens barrels to improve the focus in the entire field of view. During this whole process over the last 4 months, I've noticed that the gimbal had lost it's ability to fully compensate for the sideways roll of the AC when flying sideways or fighting a strong wind. There was some compensation, for example rotating the AC sideways when hand held, but not enough when flying. Naturally at each change I recalibrated the gimbal which did not fix this problem.
However, on my last barrel change yesterday, I did an IMU calibration and then a gimbal calibration. I then tested its ability to maintain a level image by hovering in a strong side wind (which buffeted the AC significantly), and by flying sideways into a 15+ mph wind. The results: the camera is now solid as a rock, with only a very very slight mismatch to horizontal in a worst case scenario.
So my assumptions are that:
However, on my last barrel change yesterday, I did an IMU calibration and then a gimbal calibration. I then tested its ability to maintain a level image by hovering in a strong side wind (which buffeted the AC significantly), and by flying sideways into a 15+ mph wind. The results: the camera is now solid as a rock, with only a very very slight mismatch to horizontal in a worst case scenario.
So my assumptions are that:
- The AC maintains the image at horizontal through connectivity between the gimbal and the IMU.
- The problem was fixed through calibration and had nothing to do with installing a new lens barrel. In other words, there is nothing within the electronics of the lens barrel itself that serves to keep it level.