K&F 43MM XV40 Nano-X Variable/Fader ND Filter, ND8~ND128, W/O Black Cross K&F Concept

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K&F Concept 43mm XV40 Nano-X Variable ND Filter (ND8–ND128) – Premium variable neutral density filter made from imported AGC optical glass with advanced 30-layer Nano-X coating. Delivers smooth light control (3–7 stops) with no “X” cross or color cast, featuring a self-locking ultra-slim frame for precise, vignetting-free results.

The K&F Concept 43mm XV40 Nano-X Variable ND Filter (ND8–ND128) is a professional-grade adjustable neutral density filter designed to provide smooth and precise exposure control for both photographers and videographers. Built with imported Japanese AGC optical glass, this filter maintains exceptional image clarity and color fidelity, ensuring your shots remain crisp and true to life with no unwanted color cast.

Featuring cutting-edge anti-“X” cross technology, this filter eliminates the common cross-pattern distortion seen on many variable ND filters, even when used on wide-angle or telephoto lenses. The self-locking frame ensures secure adjustment and prevents accidental changes to your selected density setting during shooting.

The 30-layer Nano-X coating provides waterproof, oil-resistant, scratch-proof, and anti-reflective protection, guaranteeing long-lasting durability and flawless optical performance. The ultra-slim 7.4mm CNC-machined aluminum frame minimizes vignetting (compatible with lenses as wide as 30mm) while offering excellent grip and easy installation or removal.

This ND filter enables 3–7 stops of light reduction (ND8–ND128), allowing you to shoot with wider apertures or slower shutter speeds under bright lighting conditions—perfect for capturing cinematic motion blur, silky waterfalls, or smooth video transitions.

Key Features:

• Wide Light Control: ND8–ND128 (3–7 stops) adjustable light reduction for versatile exposure management.

• Premium AGC Optical Glass: Imported Japanese glass ensures ultra-high definition and color accuracy.

• No “X” Cross Effect: Engineered to eliminate cross patterns common with standard variable ND filters.

• 30-Layer Nano-X Coating: Hydrophobic, anti-scratch, and reflection-reducing coatings for superior image quality.

• Ultra-Slim Frame Design: 7.4mm profile prevents vignetting on wide-angle lenses (supports 30mm focal length).

• Self-Locking Frame: Secure adjustment mechanism prevents accidental rotation.

• Durable CNC Aluminum Build: Non-slip texture for easy installation and removal.

Specifications:

• Filter Type: Variable ND (ND8–ND128)

• Material: Japanese AGC Optical Glass

• Coating: 30-layer Nano-X coating

• Frame Thickness: 7.4mm

• Frame Material: CNC Machined Aluminum

• Compatible Lens Thread: 43mm

• Recommended Lens Cap/Hood Size: 46mm

• Light Reduction: 3 to 7 stops

Package Includes:

• 1 × K&F Concept 43mm XV40 Nano-X Variable ND Filter (ND8–ND128)

• 1 × Protective Case