K&F Concept 3-in-1 Variable ND2-32, CPL, and Black Diffusion 1/4 Camera Filter

Elevate your photography and videography with the ultimate all-in-one lens solution. The K&F Concept 3-in-1 filter is a professional-grade optical tool designed for creators who demand versatility without the bulk of multiple filters. By combining light reduction, polarization, and cinematic softening into a single precision-engineered component, this filter allows you to capture stunning visuals in any lighting condition.

Key Benefits

Triple-Function Versatility:** This innovative design integrates a Variable Neutral Density (ND2-32) filter, a Circular Polarizer (CPL), and a 1/4 Black Diffusion filter. Switch between managing exposure, cutting reflections, and adding a cinematic glow without ever changing your gear.

Precise Light Management:** The ND2-32 range provides 1 to 5 stops of light reduction. This gives you total control over your shutter speed and aperture, allowing for smooth motion blur in waterfalls or wide-open depths of field in bright sunlight without overexposure.

18-Layer Nano-Coating:** Featuring advanced multi-layer crystallization coating, this filter significantly boosts light transmittance while minimizing flare and ghosting. The result is high-contrast, color-accurate imagery even in challenging backlit environments.

Cinematic Diffusion Effect:** The built-in 1/4 Black Diffusion softens highlights and smooths skin textures. It creates a professional "dreamy" atmosphere by reducing digital sharpness, making it ideal for portraiture and high-end video production.

Aviation-Grade Construction:** Built with high-definition optical glass housed in a slim, aviation-grade aluminum alloy frame, this filter ensures durability and prevents vignetting on wide-angle lenses.

Key Specs

Filter Type:** 3-in-1 Variable ND + CPL + Black Diffusion 1/4

Light Reduction Range:** ND2 to ND32 (1–5 stops)

Optical Material:** High-definition optical glass

Frame Material:** Aviation-grade aluminum alloy

Coating:** 18-layer Nano-crystallization coating

Compatibility:** Available for 58mm, 67mm, 72mm, 77mm, and 82mm lens threads

Included Accessories:** 3 microfiber dust-free nano cleaning cloths

How to Use

1. Screw the filter onto the front of your lens, ensuring the thread size matches your lens diameter.

2. Rotate the outer adjustment ring to select your desired ND level (ND2 through ND32) to control the light entering the sensor.

3. Adjust the polarization by rotating the frame to eliminate glare from non-metallic surfaces like water or glass.

4. The Black Diffusion effect is constant, providing a subtle bloom to light sources and softening skin tones automatically.

Care & Safety

Storage:** Always store the filter in a protective case when not in use to avoid scratches.

Cleaning:** Use the included microfiber cloths to gently remove dust or fingerprints. Avoid using abrasive tissues or harsh chemical solvents that could strip the 18-layer coating.

Handling:** Avoid touching the glass surfaces directly to prevent oil buildup.

Installation:** Do not over-tighten the filter onto the lens to ensure easy removal.

Notes

"18层纳米结晶镀膜" ensures maximum light transmission and a professional finish for every shot.