Fotasy M42 Lens to Sony NEX E-Mount Adapter Ring/Macro Focusing Helicoid This macro focusing Helicoid tube allows M42 lens to be used on Sony NEX E-Mount camera body. It works as Macro Focusing Helicoid. It can works as a standard M42 - Sony NEX E-Mount adapter. Infinity remains unchanged, so the lens does not need to be re-collimated or shimmed. When using a lens with the adapter, the camera body should be set to either manual exposure or aperture priority mode. Exposure and focus has to be adjusted manually. Work with Sony NEX-3 NEX-3C NEX-3N NEX-5 NEX-5C NEX-5N NEX-5R NEX5T NEX6 NEX7 NEX-F3 a6300 a6000 a5100 a5000 a3500 a3000 Alpha A7.