...How'd you go
@Pygar70 ?
This AFC thing is frustrating. There seems to be very little information online about it. My understanding is that the drone needs to remain stationary for a period of time before it will refocus. But how much time, and what if the camera moves but the drone doesn't? I tried testing it to determine how long I need to keep still for it to refocus, and I couldn't get consistent results. The most frequent re-focus interval - with the drone not moving (it was resting on a platform) - was about 20 seconds. But then sometimes it was longer, sometimes it didn't refocus at all and sometimes it would refocus sooner if I moved the camera, or maybe that was just coincidence?
Just between you and me, I always fly with my DJI goggles. And this could be my problem. I don't know if AFC works with the goggles. The software on the goggles is flying the drone - not DJI Go. When using the goggles there's no tell-tail chirp or those screen markers to tell you that a refocus has taken place. And the viewing clarity, although pretty good, is not good enough for me to know if my focus is spot-on. I haven't yet been motivated to properly test it with the goggles, as it would involve repeating the exercise a number of times and carefully analysing the footage.
So it may be that AFC doesn't work with goggles. It's been a couple of years since I updated the firmware on them. Another possibility is that I just don't keep still long enough for the refocus to kick in - especially if the requirement is 20 seconds. I rarely hover in one place for very long, and if I am stationary, the drone will either be rotating or the camera moving, or both.
When using goggles with a P4, you actually have to take off using the screen and then transfer to the goggles post launch - otherwise the drone flies in safe-mode. What I usually do is tap the screen while the drone is in the air - just before I transfer to my goggles. When forgetting to do this my footage has sometimes been in focus and sometimes not, and I think this is entirely due to how quickly I do the change over. If I pause long enough before disconnecting the screen, it gets time to refocus on infinity, if I'm quicker (& forget to tap) - it doesn't, and my footage is ruined.