Deactivate AutoExposure when trying to change exposure parameters

[flyingbarron]

Today, if the AutoExposure checkbox is marked, you cannot modify Exp. Time or Gain.
you need to uncheck the box so that the option is activated.

Proposed change -
Allow changing the values of the Exp Time and Gain at any time. If the user clicks "set" then the new value will become active and the AutoExposure checkbox will be cleared.

[artyom-beilis]

Actually it is little bit complicated then that.

When AE or AWB are unchecked I actually update various form values like exposure from the camera to know where to start from.

I think a better solution would be when user tries to use these disabled controls give some kind of tooltip/notification - disable AE/AWB to modify it.