K&F Concept 37MM NANO C Series 3-in-1 Filter

The K&F Concept 37mm NANO C Series 3-in-1 Filter combines a Variable ND2-32, CPL polarizer, and Black Mist 1/4 diffusion filter into one compact, high-performance solution. Designed for both photographers and filmmakers, it offers precise light control, enhanced color and contrast, and a cinematic soft-glow effect without the unwanted black X common in many variable ND filters.

This filter delivers unmatched versatility by merging three essential filters into one: a Variable ND2-32 for smooth exposure control, a CPL polarizing filter for richer colors and reduced glare, and a Black Diffusion 1/4 filter for a soft, cinematic glow. Whether shooting landscapes, portraits, or video, this hybrid design ensures maximum creative freedom while minimizing gear changes. Its advanced optical construction, crafted from premium AGC Japanese glass and protected by 28 layers of nano-coatings, provides exceptional clarity, high light transmission, and resistance to water, dust, oil, and scratches. Engineered with a precision-milled aluminum frame, the filter maintains durability and prevents unwanted reflections, while eliminating the typical black X pattern even at focal lengths under 35 mm. Compatible with all lenses featuring a 37 mm thread, this compact all-in-one filter is perfect for creators seeking professional results in any lighting condition.

Key Features

• 3-in-1 hybrid filter Variable ND2-32 + CPL + Black Diffusion 1/4
• Smooth ND adjustment for exposure control in bright conditions
• CPL boosts color saturation and reduces reflections from water, glass, and more
• Black Mist 1/4 creates soft highlights and a cinematic glow ideal for portraits and video
• No black X effect, even below 35 mm focal lengths
• Premium AGC Japanese optical glass for high clarity
• 28-layer nano-coatings for water, oil, dust, and scratch resistance
• Lightweight CNC-milled aluminum frame with matte anti-reflective finish
• Compatible with all 37 mm threaded lenses
• Includes protective storage case

• 1 K&F Concept 3-in-1 Hybrid Filter (ND2-32 + CPL + Black Diffusion 1/4)
• 1 Protective storage case

• Mounting Thread 37 mm
• Outer Diameter 40.5 mm
• ND Range ND2-ND32 variable
• Additional Effects CPL + Black Diffusion 1/4
• Glass AGC Japanese optical glass
• Coatings 28-layer double-sided NANO-C
• Resistance Water, dust, oil, scratches
• Model KF01.2058 / 37 mm Nano C / C-ND2-32&CPL