K&F Concept K&F 37MM Nano-X Multifunctional CPL+Variable/Fader ND 232 filter

The K&F 37mm Nano-X Multifunctional CPL + Variable ND 232 Filter combines a circular polarizer and variable neutral density filter in a single lens accessory. Designed to reduce light intake, manage reflections, and darken skies, it eliminates the X cross issue common with wide-angle variable ND filters. Made from professional optical glass with multi-layer coatings, this filter protects your lens while delivering high-quality, clear images.

This versatile 2-in-1 solution functions as both a CPL polarizer, which mitigates reflections and enhances color saturation, and a variable ND filter, allowing 2 to 32 stops of light reduction for precise exposure control.

Engineered with premium professional optical glass and multi-layer coatings, the filter maintains sharp image quality while being waterproof, scratch-resistant, and highly durable. The filter frame is crafted from aluminum alloy with a serrated edge for easy installation, and the ND adjustment is clearly marked from Min to ND32 for quick reference. Advanced design eliminates the X cross artifact often seen on wide-angle shots with variable ND filters.

This compact 37mm filter is perfect for landscape, long-exposure, or video shooting, offering both creative flexibility and lens protection in one accessory.

Key Features

• 2-in-1 filter CPL + Variable ND 232 stops
• Eliminates X cross artifact common with wide-angle ND filters
• Made from professional optical glass with multi-layer coatings
• Light transmittance down to 0.7, waterproof and scratch-resistant
• Aluminum alloy frame with serrated edge for secure grip
• ND adjustment clearly marked from Min to ND32
• Reduces reflections, darkens skies, and controls exposure in one step