The dimming effect is not good at all. I think when that happens you cannot rely on the screen iPhone 13 screen anymore. You have to go line of sight only and probably should bring the drone a little closer because you are losing some of your super powers. Thanks for letting me know about IMU calibration. I complain a lot about DJI but aside from it giving me a lot of cyber nanny pop ups it rarely needs a compass 🧭 calibration or any other calibration to fly. Feels like I have only had to do it once and after that amazing flights no problem. This Hubsan is a very high maintenance kind of girlfriend always needs some extra flowers 🌸 or chocolates 🍫 before you can fly.