Lee 100 Adaptor Ring - 82mmLee Standard Adaptor Rings feature an aluminium screw thread and attach onto the end of your lens to accommodate the Lee Filter Holder or Lens Shade (available separately). Simply screw the Adapter Ring onto your lens and the holder will clip into place by a smooth, quick release spring loaded mechanism. There are also Wide Angle Adapter Rings available and are a better match if you're using lenses wider than 35mm as this will stop any vignetting.