Lens Filter K&F Concept Filter Nano-X 46 mm KF01.1165V1 UV Protection — 46 mm UV camera filter

K&F Concept Nano-X 46mm ND2-ND32 XV38 filter is a variable neutral density filter for 46 mm lenses that reduces light entering the lens and eliminates the X-effect and flare. It is suitable for photographing flowing water, waterfalls and other moving subjects where motion blur is desired, and its robust construction offers resistance to damage. For this filter the compatible lens hood has a thread size of 40.5 mm.

Advantages

The filter uses high-quality AGC optical glass with high light transmission and a nano-coated surface composed of 28 layers that protect against water, scratches and glare. A non-slip outer design simplifies mounting and removal. The adjustable ND2–ND32 range gives precise control over exposure while the construction prevents the X-effect that can occur when polarising stages intersect.

Key specifications

• Manufacturer: K&F Concept
• Model: KF01.1165V1
• Type: ND2–ND32 variable ND filter
• Diameter: 46 mm
• Thickness: 7.4 mm

How to use

Screw the filter onto a lens with a 46 mm thread, set the variable ring to the desired density between ND2 and ND32 to reduce incoming light, and compose the shot. Use slower shutter speeds for flowing water or moving subjects to capture motion blur. Ensure the lens hood size 40.5 mm fits if attaching a hood, and handle the filter by the edges to avoid fingerprints on the glass.

Recommendations

Keep the filter clean and store it in a protective case when not in use. To avoid vignetting on wide-angle lenses, check results at extreme focal lengths and, if needed, stop down the aperture or use a single-stage ND filter.