K&F Concept 49mm Variable ND2-400 ND Lens Filter Waterproof 1-9 Stops Adjustable Ultra-Thin Camera Lens ND Filter with 24 Multi-Layer Coatings (D-Series)

【Precision Optics】Crafted from top-tier Japanese optical glass with double-sided 24-layer enhanced coating, this filter reduces surface reflections effectively. This prevents glare caused by external reflections during prolonged exposures, ensuring impeccable image quality.
【Enhanced Water Resistance】Featuring a multi-layer waterproof coating, even if water splashes onto the filter, it remains in droplet form, allowing for easy carrying and cleaning.
【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 settings may cause a cross-pattern effect, commonly known as a "black cross." This phenomenon is natural and temporary, occurring due to the adjustable ND filter's interaction with certain lenses and focal lengths.)
【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.
【Glare-Free Surface】Treated with an oxidized sandblasting process, this filter prevents unwanted stray light and minimizes unnecessary reflections on the metal surface. NOTE: This ND filter suits all 67mm lenses. A 67mm lens cap is required for this 72mm variable ND filter.

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