How do they shoot binocular scenes? Do they put two cameras in binoculars?
See this binocular vision from Ronin (1998):
Scenes where a character is looking something at the distance through binoculars are often enhanced by matting the screen with a double-circular frame. Recently, these scenes are filmed using a matte frame and a tint that is reminiscent of looking through a sniper scope.
Mattes cut holes in one clip to allow portions of another clip to show through. Mattes are used to create binocular and telescope point of view shots that were common in older movies and TV shows.