Singerb- I am using a Bay 1 to 52mm adapter on my D. No problem at all. When I bought the adapter, I was told that up to 58mm would work. I use a metal lens shade that is 58mm in diameter (which had to be trimmed back a bit since it vignettes if I use it with a filter).
Although from the outside it looks as if the viewing lens is getting shaded a touch, it doesn't seem to affect the screen image.
46mm should present no problems, except maybe finding a lens hood.