Neutral density filters evenly reduce the amount of light passing through the lens without affecting color. They’re ideal for reducing bright light in large aperture situations when a narrow depth of field is needed. This Laowa filter also allows you to utilize slower shutter speeds when blurring or showing of movement is desired. It can be used to balance exposure to highlight a key subject, too. Additionally, using this filter on your camera lens makes it possible to use higher speed film in bright light.