XCNuse, I gotta think you know a lot more about this that I do… The AF-S set of lenses have the auto-focus motor built in to the lens itself. Typically, the camera body itself has the auto-focus motor and it drives the lens directly. So, if you were to put a regular old AF lens on an Nikon AF-S camera, it would work – that is, light would come through – but the autofocus feature would not operate since there’d be no motor to drive it. Of course, you’re asking the opposite. You want to put an AF-S lens on an AF camera. Either way, they’re still F-mount type so – just guessing here – I’d like to think that you could actually hook it up. But still, I doubt you’d be able to get any autofocus action. I don’t think it has any bearing on aperture at all. — Sits back and waits to find out how wrong he is. ツ