K&F Concept Nano-X Series 52mm Hybrid 2-in-1 Filter CPL + Variable ND4-ND64 (KF01.1911)

The K&F Concept Nano-X Series Hybrid 2-in-1 Filter combines a Circular Polarizer (CPL) and a Variable Neutral Density (ND) filter in one ultra-slim frame. Designed for 52mm lens threads, this filter allows photographers to reduce reflections, enhance color saturation, and control exposure over a 2 to 6-stop ND range (ND4-ND64). Crafted with Japanese AGC optical glass and multi-layer nano coatings, it offers waterproof, scratch-resistant, anti-reflection, and oil-proof performance for reliable outdoor use.

Advantages

This hybrid filter eliminates the need to stack multiple filters, saving time and reducing the risk of vignetting. The CPL effectively cuts glare from water, glass, and foliage, while the variable ND enables smooth video recording and long exposures in bright conditions. The aviation aluminum alloy frame is lightweight yet durable, and the ultra-slim design ensures compatibility with wide-angle lenses.

Suitable for

• Landscape photographers seeking to deepen blue skies and control exposure
• Videographers requiring smooth motion blur and reduced shutter speed
• Travel photographers who need a compact, all-in-one filter solution
• Outdoor shooting in bright sunlight or reflective environments

Key specifications

• Filter Type: Hybrid (Variable ND + CPL)
• Filter Diameter: 52mm
• ND Range: ND4 to ND64 (2-6 stops)
• Polarizer: Circular Polarizer (CPL)
• Optical Material: Japanese AGC Optical Glass
• Frame Material: Aviation Aluminum Alloy
• Coatings: Multi-layer Nano (waterproof, scratch-resistant, anti-reflection, oil-proof)
• Series: Nano-X Series
• Compatibility: Lenses with 52mm filter thread

Recommendations

For best results, use with a lens hood to minimize flare. The variable ND may show cross-polarization artifacts at maximum density; avoid extreme settings for critical work. Store in the provided case to protect the coatings.