·[Import Optical Glass]Crafted from premium AGC optical glass with an astonishing 18 multi-layer coatings, this ND filter reduces reflections and glare, ensuring superior image quality.

·[Versatile Light Control]With 1 to 9 stops of adjustable light reduction and 360-degree rotation for precise dimming settings, this filter is perfect for diverse scenarios.(Note: High stops may cause a cross-pattern effect, commonly known as an "X black cross."This phenomenon is natural and temporary, occurring due to the adjustable ND filter's interaction with certain lenses and focal lengths.)

·[Glare-Free Surface] Treated with an oxidized sandblasting process, this filter prevents unwanted stray light and minimizes unnecessary reflections on the metal surface.

·[Slim and Secure]At a mere 7.4mm thickness, the CNC-patterned design ensures enhanced friction while rotating, making it easy to attach/detach lenses and accessories anytime, anywhere.

·[Compatibility Note]Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "Ø" (diameter) symbol. For example Ø37= 37mm lens thread size. Check your camera's lens thread size (usually beside a "ø" diameter symbol) before ordering. A 58mm lens cap is also required for this 55mm variable ND filter.