Help! I have just bought a Nikon D700 but I only have my 4 old but lovely manual lenses to use on it. I have keyed the information on each lens into the camera as instructed but do not know if I then have to tell the camera which lens I am using ( 1,2,3 or 4) every time I change lenses or does the camera automatically recognize the lens? If so how do I do this. Some clear advice would be much appreciated as I cannot find this info in the Nikon manual.