Field goal attempts that hit the cameras on field goal posts

[KWH]

The cameras are mounted behind the plane of the goal posts.
Thus, once the ball breaks the plane of the goal, the field goal counts, and A is awarded 3 points.
Restated, if the ball were to hit the camera, at that point the ball is a dead ball and it has no bearing on the outcome of the play.
Same issue if the ball hits the net and were to bounce back through the uprights.