This adapter ring used to fit the 100mm holder to different thread diameters of your individual lenses. Wide angle rings bring the holder a few millimeters closer to your lens, reducing the chance of vignetting. Formatt-Hitech adapter rings are milled from the highest quality aluminum.
Milled from the highest quality aluminum
Accommodates up to 3 resin or Firecrest glass filters
Includes spacers enabling the use of a 4mm glass filters as well as our resin and Firecrest filters
This means that you can use specialized diffusion and other filters which are only made in glass