I was wondering how compur shutters work with aperture. I know that compur shutters are built in between the lens and are just like aperture blades. The thing that is constantly on my mind, is there an aperture blade in front or behind the leaf shutter blades or is the leaf shutter blades also the aperture? So lets say i select F8 and shutter speed to 1 second, will the blades advance to F8 and along with the shutter speed stay at 1 second until it closes? or is there an aperture behind the shutter?