K&F Concept 49MM Multi-Function Adjustable Filter

The K&F Concept 49mm Multi-Function Adjustable Filter combines a Black Mist 1/4 diffusion effect with a variable ND8128 light-reduction range, offering photographers and videographers a versatile 2-in-1 solution in a single slim, high-quality unit. Designed with premium optical glass, 28-layer coatings, and an ultra-thin aviation-aluminum frame, it delivers smooth rotation, minimized reflections, and clean, high-definition imaging for both wide-angle and telephoto shooting.

The K&F Concept 49mm Multi-Function Black Mist 1/4 & ND8128 Filter is engineered for creators who need flexibility without swapping gear. This innovative 2-in-1 filter functions both as a cinematic Black Mist 1/4 diffusion filter softening highlights and adding natural glow and as an adjustable ND filter offering 3 to 7 stops of light reduction (ND8128). Precision-crafted from top-grade optical glass, it features a double-sided 28-layer anti-reflection coating that reduces flare, maintains 84 transmittance, and ensures razor-sharp clarity even at telephoto focal lengths. The 7.4mm ultra-thin frame, made from durable aviation aluminum, prevents vignetting across the zoom range, while the CNC-machined trapezoidal texture provides superior grip for smooth and controlled adjustments. With its anti-scratch, anti-oil, waterproof, and mildew-resistant coatings, this filter withstands demanding shooting conditions and stays easy to clean, making it an essential all-in-one tool for photography and cinematography.

Key Features

• 2-in-1 Black Mist 1/4 diffusion + Variable ND8128 filter
• Adjustable 3 to 7 stops light reduction
• 28-layer double-sided anti-reflection coatings
• 84 transmittance meeting Black Mist 1/4 standards
• High-definition optical glass with precision polishing
• Ultra-thin 7.4mm aviation-aluminum frame
• CNC trapezoidal texture for improved rotation grip
• Anti-scratch, waterproof, oil-resistant, and anti-mildew coatings
• No vignetting at wide-angle or telephoto focal lengths

• K&F Concept 49mm Multi-Function Black Mist 1/4 & ND8-128 Filter
• Protective storage case

• Brand: K&F Concept
• Filter Type: Black Mist 1/4 + Variable ND8128
• Light Reduction Range: 3 to 7 stops
• Glass: Premium optical glass with 28-layer coatings
• Transmittance: 84 (Black Mist 1/4 standard)
• Frame Material: Aviation-grade aluminum
• Frame Thickness: 7.4mm
• Diameter: 49mm
• Design: CNC trapezoidal grip pattern
• Coatings: Anti-reflection, waterproof, oil-resistant, anti-scratch, anti-mildew