I currently own the Nikon D300, but I am considering moving on to the D700. Is it true that my Nikkor VR 18-200 lens is not really compatible with the D700. I was told it could be used but that, for some reason, the effective pixel rating of the camara would be deminished to about 5 megapixels. Is this accurate, and is so, is there a comparable lens to the 18-200 that is made for the D700?? Thanks