I was confussed mixing your post with the Ferry's one, he remplaced the Nikon with the Canon...
I don't use Nikon cameras or software, but perhaps a chipped adapter (or a chip glued in your F mount) may allow you to use all the camera mettering modes (they allow mettering in lower end Nikon DSLRs). Nikon experts may tell you.
Images made through a microscope. All subject types.