I haven't seen your media yet. So.....I have to ask. Once his head was between your wife's legs, did you operate the camera? It's a profound event, after all!
Since the photographer who cuckolded me was operating the camera, I never had the option. If he did take another shot of sliding his erection into her, I never saw it (alas!). But given the distance his face was from her pussy in that last photo, I think that as he moved closer, the distance was too short for the camera's focal length (unless he used a macro lens!). I would have loved to see a shot of the culmination, but perhaps her was too caught up in the final consummation of his desires.