The NiSi 82mm Filter Adapter Ring is special designed for using the S5 system for Nikon 14-24mm and Tamron 15-30mm on lenses which have 82mm filter thread.  This new adapters allow you to use the S5 filter system for Nikon 14-24mm or Tamron 15-30mm with the original lenses it was designed for in addition to other lenses you may also own of 77mm diameter.  The adaptor ring features No Vignetting even at 16mm.