Variable neutral density camera filter K&F Concept Nano-X 46 mm

ND neutral density filter that reduces the amount of light entering the lens to extend exposure time and enable effects such as motion blur or a shallower depth of field. The filter supports an adjustable 3–7 stop range to control exposure while maintaining image quality with minimal artifacts.

Advantages

Double-sided multilayer green coating on both surfaces reduces reflections from the scene and the filter itself, improving contrast and sharpness. Advanced design prevents the typical "X" cross pattern seen on many variable ND filters when used with wide-angle lenses. Durable hydrophobic and scratch-resistant nanometer coatings repel water, dust and dirt, making the filter easier to clean and more resistant to abrasion in demanding conditions.

Key specifications

• Type: Variable neutral density (ND) filter
• Adjustable range: 3–7 stops
• Coating: Double-sided multilayer green coating
• Surface treatment: Hydrophobic and scratch-resistant nanometer coatings
• Common benefits: Reduces reflections, minimizes "X" cross with wide-angle lenses, repels water and dirt

How to use

Mount the variable ND filter to the front of the lens and rotate the filter ring to adjust the density within the 3–7 stop range until the desired exposure or motion effect is achieved. Check the viewfinder or histogram to confirm correct exposure. When shooting wide-angle, verify images for any residual artifacts. Clean the filter with a soft cloth and appropriate cleaner to preserve the hydrophobic coating.

Recommendations

Use this variable ND filter for long-exposure daytime photography, controlling shutter speed for motion blur, or opening the aperture in bright conditions to achieve shallow depth of field. Avoid extreme rotation beyond the marked range and store the filter in a protective case to maintain the coatings.