Nanocoated filters with a diameter of 55 mm. 24-layer coated glass for optimal resistance against water, oil, and scratches. ND64 reduces light by 6 stops and is ideal for landscape photography. Nanocoated filters ensure optimal image quality. The slim design prevents vignetting. The filter reduces light intake without affecting the overall color balance. ND filters extend exposure time. A neutral density filter (ND filter) or gray filter blocks a portion of the incoming light. With a gray filter, you significantly extend the exposure time, achieving effects like blurred water or preventing overexposure in bright sunlight with an open aperture.