Thank you for all of this information. I also have a D80, and am very happy with it. It was my first DSLR, and I bought it because I already had Nikon film cameras and lenses (N70 w/35-105, N8008 w/35-105, 100-300AI) and I ended up buying an AF-S 18-70 ED, and an AF 70-300D lenses instead of the plastic kit lenses. I like the way my D80 works with my old MF lenses also. Will the D7100 and it's replacement still work with my old Ai-s lenses?