I was very surprised to see the generalised “everything that happens between the script and the screen” kind of definition. I have always heard it used to explicitly mean the ‘scene setting’ – in other words a particular framing or keynote shot that defines the emotional tenor of the film. Sure, that obviously reflects the directorial eye – but the latter meaning comes, I believe, by extension from the simple meaning: scene setting.

The Straight Dope article, btw, is simply bollocks. They have the meaning of metteur-en-scéne completely wrong by 180 degrees – even wiki gets that right.