In some photos, you can see that from the camera's POV, the area around the actors is displayed on LED as green screen so the actors can be masked out. Then, a

In some photos, you can see that from the camera's POV, the area around the actors is displayed on LED as green screen so the actors can be masked out. Then, a higher resolution background is composited in. Thus, the original LED serves to accurately light the scene to reflect the background but not always to actually be the background.