This camera is on the header facing down
Most operators put one camera on each side of the header looking at the ground to monitor header loss.
The other camera goes on the back of the combine pointed upward, focused on the spread chopper area and looks for grain, in flight, coming out of the back of the machine to measure combine loss.
If you have a combine with a dual spreader in the back, you can add another camera and simply point it towards the corners.

