Does anybody notice that Darth Vader's helmet looks shorter in the Hoth scene in ESB than in other shots? I call it his "haircut helmet" cuz it looks like the bottom end of the back piece has been trimmed upwards. There's another scene in ROTJ where you notice it as well but I can't remember which one off the top of my head.
So yeah, anybody else see this? Was it a stunt helmet?