OK guys, I’m determined to keep at this until we’re all on the same page. And I’m perfectly open to being convinced that I’m wrong. But I’m not convinced yet.
The fact that the left glove (from the actor’s perspective) and arm appear to be in brighter illumination is not instructive regarding the reflections on the scanner tip, and I think you guys are proceeding from some false assumptions by thinking that it is. This is a TV studio; there are more lights than just the key light. Because the arm and glove are diffuse materials, the fact that they appear to be in brighter light doesn’t tell us anything about the directionality of that light source or light sources in general in the room. It merely means that the light illuminating the actor’s left arm (it’s two lights, actually, it you look at the play of catchlights in the red button on his sleeve) is either closer or more intense than the lights to the actor’s right. That doesn’t tell us much about the direction of other light sources within the studio—of which there are definitely more than one. Only a highly reflective material could give us specific information about where a particular light source is located within the studio to better than, say, 45-90 degrees, and of course a highlight on a reflective object in a room doesn’t necessarily have to come from the brightest light in said room; it just has to be perpendicular to the light rays from the light source (from the perspective of the image plane), even if that light source is less bright than the key light. The only highly reflective object in the room is the scanner itself, and in particular the glossy black tip, along with the red button on the sleeve.
If there are no sources of light to the actor’s right, either from a bounce/flag or from another light, how do we account for these reflections?
Pay particular attention to the highlight on the bottom left of the scanner (from the audience’s perspective). I’m seeing two light sources here: one above the actor’s right shoulder and one lower toward the floor. The latter is the one that I think is creating the highlights in question. That light appears to be more proximal to the camera than the light illuminating the shoulder, since the actor’s lower arm is still in shadow.
As I view it, the light source causing the above circled highlight on the scanner is the one with the rays perpendicular to the contours of the scanner tip and creating reflections on it, even if it isn’t the brightest in the scene (and there is no reason it should be).
None of what I’ve said proves that the geometry of the face is as I’ve supposed (I’m still not convinced myself). It just suggests that you need a different argument to disprove my hypothesis. I’m going to do some more digging around in the footage myself to see what I can come up with, and I’m also thinking of actually 3D printing the two proposed geometries up-scaled and setting up a little studio lighting test myself. You guys have now made me determined to figure out which is right! Counter evidence is welcome/encouraged.