LG G3 Video Recording Questions

[Ryu69]

Hi. I have a some questions about the usage of the LG G3 Video recording?

When I start the recording, how come it automatically zooms?

When I start the recording, how come it take a couple of seconds before it starts to record?

When I start the recording, how come it doesn't automatically focus? I have to tap a part of the screen before it focuses.

Thanks for your help.