>I have to disagree with you on that. If camera >"allows" manual override ISO during the >"action", it has to either honor that ISO untill >camera(or metering) is OFF or limit adjustment to the trange >specified in Auto ISO menu. That definetely Nikon has missed >something here.
But then you could equally argue that if a manual ISO of 6400 has been selected, it should be impossible to set 3200 as the Maximum Sensitivity for Auto ISO. Should you be able to turn on Auto ISO when Max Sensitivity is below the current manual ISO?
The two things are independent. Auto ISO will use the manual ISO setting as its starting point, but will always select an ISO between the camera's base ISO and the Maximum Sensitivity, even if that Maximum is below the manually selected value. I don't see anything ambiguous about it.