Using this filter holder you can attach filters from the NiSi 100 mm system to the corresponding lens. The filter holder is designed so that the respective filter sits directly in front of the objective lens. This prevents the filter holder from protruding into the image and causing shadowing.
The filter holder has two slots for inserting compatible filters. The filter holder can be rotated 360 °.
This offers the particular advantage that you can rotate the bracket as you want to bring a Grauverlaufsfilter used in the holder on a line with the horizon.
The NiSi rectangular filters have rounded corners for easy insertion into the slot of the holder and a foam-like border that prevents light from entering.