PBH- really? In the E3 2004 trailer, there's a scene in the E3 2004 trailer where Snake uses a M16A1 and when he raises it into the iron sights position, his FOV is zoomed in In that trailer, there's a scene with a DshK emplacement where the first-person view mode shows its iron sights (unzoomed) but then the player zooms them in with them whilst shooting the enemies.
Interesting, thanks for that.