Last night I took my mavic out for a flight it was just dark enough that it told me the obstacle avoidance would not work. The camera seemed to see okay. Then I tap the screen to focus. The camera part of the app froze could not turn camera or video on or off. But it must have been stuck in video the lights went out on my mavic. Made it a little bit difficult to see so I brought it back. As soon as it saw the lights from the house all camera functions came back. Apparently topping Focus confused the camera and it locked up. So if you were a ways away and it was getting dark it might be interesting. Hope the return home works at the time.