Control the amount of light
Neutral filters may be called dimming filters or ND filter (Neutral Density). If you are long shutter speed photographer, you can use neutral filter not only at night, but also during the day time. On the other hand, a single ND filter can change the density "Variable ND filters," which allow the density to be changed with a single ND filter, have been on the rise in recent years. These filters are very useful not only for photography, but also for adjusting shutter speed when shooting video.
