>>11399236I think this might be the dumbest thing I've seen on /sci/ in a while, but fine.
First, the lenses are not parallel, and sit at slightly different angles in the frames. These differences are exaggerated by their being convex. This accounts for the variable distortions in the reflections. Second, one lens is closer to the camera than the other: it will be quicker for one of the reflections to meet the camera. The other reflection will arrive later. If your face is animated, your expression will change from one instant to the next, each instantiation of which may be captured by the camera.