K&F Concept 55mm Variable ND Lens Filter ND2-400 (1-9 Stops) Neutral Density

Condition: Open box 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】This ND filter suits all 55mm lenses. 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.