The 12-stop 100 x 100mm NanoPro MC ND Filter from Haida is an ND filter with a 4000x filter factor that provides a 12-stop exposure reduction. It is compatible with a Haida 100 Filter Holder or Haida 100-Pro Filter Holder, and its 3.6 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By slowing your exposure time or increasing your aperture, you can control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.