Introduce：The ND 1.8 Filter from Haida is an ND filter with a 64x filter factor that provides a 6-stop exposure reduction.Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters. | Effect：1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By slowing your exposure time or increasing your aperture, you can control depth of field and convey movement more easily. | Coating：To prevent internal ghosting and reflections, each glass surface includes 10 layers of anti-reflection coatings, which also offer greater protection to the filter substrate and help keep it clean for a longer period of time. Results in an improved beading effect when the surface comes in contact with water or oil, allowing for more efficient cleaning. | Material quality：This filter is constructed from optical glass for clarity and color fidelity. A thin, aluminum alloy filter ring minimizes the potential for vignetting, while remaining durable and lightweight. | Other：Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap.If you have any questions about Haida products, you can contact us at any time.