Fotasy NAM42 M42 Lens to Nikon DSLR Camera Adapter Ring Make M42 mount lenses (Zeiss, Pentax, Praktica, Mamiya, Zenit) can be used on Nikon AI cameras For Nikon DSLR D4 D3 D800 D700 D600 D7100 D7000 D5200 D5100 D300 D200 D90 D80 D5000 D3200 D3100 D3000 and new models It is possible to use Macro rings and other accessories Please note infinity focus is not allowed, maximum focus distance is around 2-4 meters Brand Name: Fotasy