I saw this posted somewhere else and it changes my "zoom" experience a lot. Takes a little getting used to especially if your trying to move the gimble up and down but it's helpful so I don't have to take my hands off the controller and touch the screen looking around in explore mode.
I don't remember if it's in the manual if it is I missed it so sure someone else did too.
I don't remember if it's in the manual if it is I missed it so sure someone else did too.