I would like to reiterate here the same possible potential undesired consequences of this UI design, like those I already raised for the iOS app. A better approach might be to limit the user input and UI feedback to optical zoom and/or fov angle levels only, despite the fact that this may apply to the resulting images already. In other words, in my humble opinion smooth transitions should go away. Users expect “what you see is what you get” in the view finder and digital image processing trickery on the phone should be avoided whenever possible.
Otherwise, a respectable update! 
Good job.