That is not true. You get more depth of field with a wider focal length at the same aperature and distance to subject.The three main factors that affect depth of field are aperture (f-number), focal length, and the distance between the camera and...
That doesn't sound correct.
The lens should have plenty of depth of field whether the aperture was f2.8 or f1.8.
It's a wideangle lens and wideangle lenses have lots of DoF.
Doesn't that suggest that this isn't a problem?
Can you post a couple...
Dial up the settings to 1080p 60 fps and set the playback speed to 0.5 and look closely.
You can see that at least two of those drones have flapping wings.