K&F 55MM XV40 Nano-X Variable/Fader ND Filter, ND8~ND128, W/O Black Cross K&F Concept

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K&F Concept 55mm XV40 Nano-X Variable ND Filter (ND8–ND128) – Professional-grade variable neutral density filter made with premium imported AGC optical glass. Offers smooth 3–7 stop light reduction with no “X” cross, no color cast, and uncompromised sharpness. Features 34-layer Nano-X coating, waterproof and scratch-resistant surface, and a 7.4mm ultra-slim CNC frame for zero vignetting.

The K&F Concept 55mm XV40 Nano-X Variable ND Filter (ND8–ND128) is designed for photographers and filmmakers seeking precise exposure control in a compact, high-quality filter. Built with imported Japanese AGC optical glass, this filter delivers unmatched image clarity, color fidelity, and contrast — without any color cast or image degradation.

The advanced self-lock frame design completely eliminates the unwanted “X” cross pattern commonly found in variable ND filters, ensuring smooth and consistent results across wide-angle and telephoto lenses alike.

Featuring 34 layers of Nano-X multi-resistant coating, the filter repels water, oil, and dust, while providing superior protection against scratches and reflections. This ensures clean, vivid, and high-contrast images in any shooting environment — from bright daylight to cinematic low-light scenes.

The ultra-slim 7.4mm CNC aluminum frame minimizes vignetting (supports down to 34mm focal length) and provides a precise, non-slip grip for effortless installation and removal. This ND filter is perfect for long-exposure photography, video shooting, and achieving cinematic motion blur under bright lighting conditions.

Key Features:

• 3–7 Stops Light Reduction (ND8–ND128) – Ideal for shooting in bright environments and creating motion blur or shallow depth-of-field effects.

• Imported AGC Optical Glass – Delivers exceptional clarity and true-to-life color reproduction.

• No “X” Cross Pattern – Innovative self-lock frame eliminates the common cross effect found in variable ND filters.

• 34-Layer Nano-X Coating – Waterproof, oil-resistant, anti-glare, and scratch-proof for long-lasting performance.

• Ultra-Slim 7.4mm Frame – Prevents vignetting on wide-angle lenses (supports up to 34mm focal length).

• CNC Precision Frame – Non-slip design for easy installation and removal.

• Universal 55mm Fit – Compatible with all 55mm thread lenses; use 58mm caps/hoods for this filter.

Specifications:

• Filter Type: Variable ND (ND8–ND128)

• Light Reduction: 3–7 Stops

• Glass Material: Japanese AGC Optical Glass

• Coating: 34-Layer Nano-X Multi-Resistant

• Frame Material: CNC Aluminum Alloy

• Frame Thickness: 7.4mm

• Thread Size: 55mm

• Recommended Lens Cap Size: 58mm

• Water / Oil / Scratch Resistance: Yes

• Anti-Reflection: Yes

Package Includes:

• 1 × K&F Concept 55mm XV40 Nano-X Variable ND Filter (ND8–ND128)

• 1 × Protective Storage Case