When you look through Binoculars, do you see two overlapping circles or one big circle?

I see one big circle. I dont know why. When I watch movies or tv, it will show someone looking through Binoculars and they see 2 overlapping circles.
everytime I watch someone with Binoculars on tv. They also show what the person sees as he is looking through and its always 2 overlapping circles

Giants clock – squared circle

Image taken on 2008-07-15 00:29:38 by someToast.