Hello there!My D7000 has unfortunately fallen ill after a recent encounter with the floor. Yes, I dropped it. :(Now it always believes it has a lens attached. When I'm in A mode it believes it's running F4 and in M it's 5.6. In all other modes, I get the F-- error. This always happens regardless of whether I have a CPU lens, a fully manual lens or no lens at all attached.What I would like to know is:What does a D7000 say as aperture when there is no lens attached in both A and S mode?How does...