SmallRig CPL & VND 3-5 filter (4941) is designed specifically for the DJI Osmo Action 4 action camera. This innovative filter combines the features of a circular polarizing filter (CPL) and an adjustable neutral density filter (VND 3-5, equivalent to ND8-ND32), providing the photographer with versatile tools for creative expression and enhancing image quality. It is excellent for outdoor shooting in varying lighting conditions, helping to control exposure and reduce distracting reflections from surfaces like water or glass. The easy and quick interchangeability of the filter streamlines the shooting process, allowing you to focus entirely on the essentials. The filter lens is made of high-quality, highly transparent optical glass. Its multi-layer coating ensures excellent color reproduction and minimizes lens reflections. The coating is also designed to repel water and oil and prevent mold formation, making the lens durable and easy to clean. The ND8 setting is suitable for bright conditions, reducing the amount of light hitting the sensor and balancing the image for a more natural look. In medium-bright conditions, the ND32 setting offers a wider range for adjusting exposure, improving detail and color reproduction. The CPL function effectively removes reflections from non-metallic surfaces while enhancing the saturation and contrast of the image, resulting in more vibrant and realistic shots.