I have a Nikon Series E 50mm/1.8 lens and a Fotodiox Nikon(G) adapter. I guess this adapter was made for G series lenses (aperture control in the body, not in the lens) because the adapter has an aperture ring. The adapter works with the Nikon E lens, but once mounted to the adapter, I cannot open the aperture beyond f/4 using the lens' aperture ring. I can open the lens farther using the adapter's aperture ring, and while this works, it's less than ideal. So what would be a good adapter to use with this lens that will not interfere with the lens' aperture control?