Use popular Nikon F lenses with your Sony E-mount body. Made famous by many professionals in years past, Nikon's pantheon of classic glass would be available for use on your Sony E-mount camera. K&F have introduced this Copper Edition as an improvement to their original design.
From the manufacturer:
With this lens adapter, you can mount Nikon lens (G/ F/ AI/ AIS) to be used on Sony NEX-3 NEX-5 camera body. This adapter is different from other Nikon-NEX adapters, it has an Aperture Control Ring, this adapter fits ALL Nikon mount lenses. Compatible Cameras (Including, but not limited to): Sony Alpha a7, a7r, a7s, NEX-3, NEX-5, NEX-C3, NEX-5N, NEX-7, NEX-F3, NEX-5R, , NEX-6, NEX-VG10, NEX-VG20, NEX-VG30, NEX-VG900, NEX-FS100, NEX-FS700, NEX-EA50. (NOTE: This adapter will NOT fit on the Sony a7S, a7 II, a7S II, and a7R II.) Please Note: If you want to use Nikon AI lens on this Nikon(G) adapter ring, it could be attached, but the aperture control ring could not be used，as there is a pin on Nikon(G) lens that could move the aperture control ring but no on AI lens. Please note: Infinity focus position：the position of the infinity mark 【∞】of the telephoto lens or super-telephoto lens is shifted slightly to the positive side to enable focus adjustment even when focus shift is caused due to temperature changes. The shift range is denoted by an L-shaped line, Be sure to check the focus through the viewfinder even when you shoot at infinity.