Filming 15 minutes in a row with the Mavic 2 Pro is not a very difficult goal, but to bring out this footage without any loss of focus ... seems to me another performance!

Despite many videos on the subject (cause of much controversy), the diligent reading of the subject in the few documentation that can be found on the couple DJI GO 4 / Mavic 2 Pro, I have not managed to answer the following question:
When to use "Manual Focus" or "Automatic Focus" or even "Automatic Focus Continuous" instead?

If a good soul has clear ideas on this, I thank him in advance for kindly summarize for me and probably for others the strategy and settings to use to film for sure without blur with a quadricopter of this price !

Set focus at infinity and leave it alone unless filming very close to a subject.