K&F CONCEPT Variable ND2-400 Neutral Density Filter 37mm-82mm Ultra Slim Variable ND Filter for Camera Lens & Clip-on Phone Lens

【Import Optical Glass】Crafted from premium AGC optical glass with 8 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: Max 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 specific 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】Check your camera's lens thread size (usually beside a "ø" diameter symbol) before ordering.

Attention: Due to the upgrade of product packaging, new and old packaging will be shipped randomly.

Old packaging:

New packaging:

Q1: What does ND2-400 mean?

A: The K&F CONCEPT ND2-400 is an adjustable neutral density filter with 1 to 9 stops light reduction. It ranges from ND2 to ND400, allowing stepless dimming to control shutter speed freely for different lighting conditions.

Q2: What shooting scenarios is ND2-400 suitable for?

A: Ideal for long exposure and video creation. Perfect for silky water flow, blurred cloud movement, portrait shooting in strong sunlight, cinematic video, street view and landscape photography. It helps avoid overexposure and create natural motion blur.

Q3: What are the advantages of adjustable ND2-400 filter?

A: One filter covers multiple gears, no need to prepare several fixed ND filters. Stepless rotation design for quick light adjustment, lightweight and easy to carry, cost-effective for photography lovers.

Q4: How to choose the correct filter size?

A: Please check the diameter number marked with the symbol Φ on the front of your camera lens. We provide multiple sizes from 37mm to 82mm to fit most DSLR and mirrorless lenses.

Q5: About the coating quality

A: Features multi-layer nano coating, ultra-low reflectivity, anti-glare, scratch-resistant, water and oil repellent. Effectively reduce ghosting and flare, protecting your lens while delivering high-quality shooting results.