Very interesting. There’s the set and the scene, in the centre and back of the frame. The apparatus is in silhouette in the foreground. Banks of lights, a big reflector, the camera, Miss Guy. The scene begins, as it were. They are filming the usual sequence shot, and the usual or at least often artificial, ornamental stuff. (Very pretty too, and very capable.) They probably intended a mere promotional actuality, but they actually accomplished deep space, and a real historical and emotional resonance.