On the P4 controller... My buddy was asking me what the camera roller dial does when you press it.  I could not answer because I did not know.  You can feel that it is a push switch though.  Does this dial have any function other than exposure?

If I remember right it switches the function from EV to shutter speed control.

Ok thanks.  I had looked a couple of times and never found anything on it.

While holding the C2 switch on bottom of the controller the "roller dial" can be used to tilt the gimbal horizon back to level if it's not level

poppylfh-sp Posted at 2016-10-4 17:05
While holding the C2 switch on bottom of the controller the "roller dial" can be used to tilt the gi ...

Unless you happen to be on latest DJI build, at present it does not seem to function for gimbal tilt adjustment on DJI Go 3.0.0 for IOS.