When to start focussing? In photo or video mode?

[eivissa1]

The Panasonic camera's are great for video and for a quick switch between making photos and video.

I was wondering what would be the best way to start focussing if one wants to records 4K video.

I mean this: if you are in the photo mode and I push the 4K video button there is a crop. A part of the picture is cut off, so the angle is less. Would it make any difference when I would already focus in the photo mode, or is it better to focus in the 4K mode?

Or is there no difference between both manners? I hope I was clear, due to the fact that english is not my native language.

I appreciate your response.

 

[eivissa1]

Funny that no one responded on this question.

Anyway, I did some tests. It appeared that focussing after one hits the video button a bit sharper is than first focussing in the foto modus and then start the video button.

I think that the result is due to the crop with 4K video.