I did not understand when and why I have do all the calibrations. After loading the latest firmware, I have not done any calibration (my philosophy is: "if it works, do not change"). I enclose the link of a test video, with 360° panoramic ; notice, when the shot is lowered, the alignment with the horizon. test no calib.mp4 The video quality is poor because I have not shot in 4K, but I ask you: What could I get more about stability and alignment, doing all calibrations ? Thanks in advance for any response.