Determine angle of view of smartphone cameraThe Camera.Parameters getHorizontalViewAngle() and getVerticalViewAngle() functions provide you with the base view angles. I say "base", because these apply only to the Camera itself in an unzoomed state, and the values returned by these functions do not change even when the view angle itself does. Camera.Parameters p = camera.getParameters(); double thetaV = Math.toRadians(p.getVerticalViewAngle(
