If ur adaptor is just a piece of metal, then there is no af confirmation.
To have it you need a chip glued on to the adaptor, to sort of trick the camera into thinking there is some electronics in the lens.
The chip isnt cheap though.
Its quite a shame because nikon bodies themselves doesnt require it.
So for AF confirmation, you gotta do a DIY job?
Any manual Nikkor (or FD) macro lenses that are a good bang for buck?