Formatt Hitech ND Filter (100 x 100mm, 4-Stop)

This 4-stop, 100 X 100mm Formatt Hitech ND Filter is a neutral density filter that provides a 4-stop exposure reduction and is compatible with a Formatt Hitech 100mm Aluminum Modular Holder or Formatt Hitech 100mm Firecrest Filter Holder. Its 1.2 optical density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required.