High-quality gray filter with haptic feedback mechanism. Reduces digital sharpness for a smooth, aesthetic appearance. The preset stop range prevents cross-polarization. No vignetting with lenses up to 16 mm focal length. The haptic feedback mechanism allows for effortless locking at each stop setting. Gives your footage a soft, creative look and effectively enhances your shots. The PolarPro Defender360 offers 360° filter protection with water and dust sealing. ND filters extend exposure time. A neutral density filter (ND filter), or gray filter, blocks a portion of incoming light. With a gray filter, you significantly extend exposure time, achieving effects like blurred water or preventing overexposure in bright sunlight with an open aperture.