Please note: Infinity focus position:the position of the infinity mark ?8?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. 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. 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.). With this Lens Mount Adapter, you can mount Nikon lens (G/ F/ AI/ AIS) to be used on Sony E mount ,Sony NEX-3 NEX-5 camera body. This adapter is different from other nikon sony e mount adapter, its has an Aperture Control Ring, this adapter fits ALL Nikon mount lenses. Smooth surface for effortless mount,infinity focus allowed. Allow Metering: AE Priority / Manual Stop-down Metering.Manufacturer: Kent&Faith Concept. Date First Available: August 2, 2015. Is Discontinued By Manufacturer: No. Best Sellers Rank: #30 in Camera Lens Adapters & Converters. Customer Reviews: 4.5 out of 5 stars 3,256 ratings 4.5 out of 5 stars. Item model number: KF06.070. : B06WVNLVC1. Item Weight: 1.76 ounces. Product Dimensions: 3.15 x 3.15 x 1.57 inches.