49MM ND2-ND400 Variable Filter (1-9 Stop), 24 Layers of Nano-coating K&F Concept

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The K&F Concept 49mm ND2–ND400 Variable ND Filter provides adjustable 1–9 stop light reduction for long exposure and motion-blur photography in varying lighting conditions. Built with HD AGC optical glass and 24 layers of nano-coating, it offers exceptional clarity, reduced reflections, and strong resistance to water, dust, and scratches. Its ultra-slim 7.4mm frame ensures wide-angle compatibility, while the CNC grip ring ensures smooth and precise adjustments.

The K&F Concept 49mm ND2–ND400 Variable Neutral Density Filter is a versatile and essential tool for photographers and videographers looking to achieve creative exposure control. Offering a flexible reduction range from 1 to 9 stops, this filter adapts instantly to changing ambient light, making it perfect for capturing long exposures, motion blur, flowing water, daytime portraits, and cinematic video in bright surroundings.

Constructed from premium HD AGC optical glass, the filter features 24 layers of nano-coating that effectively minimize reflections, repel water and oil, resist dust, and maintain exceptional image clarity. The frame’s ultra-slim 7.4mm profile is designed to prevent vignetting, even on wide-angle lenses, while the CNC-machined trapezoidal grip ensures effortless and precise ND adjustment.

Although a faint “X” cross pattern may occur at extreme ND values depending on lens focal length, it naturally resolves with continued rotation—an expected characteristic of variable ND filters. Fully compatible with all 49mm filter-thread lenses, this professional-grade filter delivers reliable, high-performance results for landscape, travel, and video creators.

Key Features:

• Adjustable ND2–ND400 (1–9 stops) for flexible exposure control
• HD AGC optical glass with 24 nano-coated layers for superior image quality
• Waterproof, dustproof, oil-resistant, anti-reflective coatings
• Ultra-thin 7.4mm aluminum alloy frame prevents vignetting
• CNC trapezoidal rotating ring for improved grip and precise adjustments
• No color shift—maintains true-to-life colors
• Ideal for long exposure photography, motion blur, video shooting, and bright outdoor environments

• 1 × 49mm ND2–ND400 Variable ND Filter
• 1 × Protective Storage Case

• Filter Type: Variable Neutral Density (ND2–ND400)
• Stops: 1–9 stops
• Glass Material: HD AGC Japanese optical glass
• Coating: 24-layer nano-coating
• Frame Material: Aluminum alloy
• Frame Thickness: 7.4mm ultra-slim
• Compatibility: Fits all 49mm lens threads