K&F Concept 52mm Nano-X Variable ND Filter ND2-ND400 (1-9 Stops) 28 Coatings AGC Glass

52mm Nano-X Variable ND Filter

The K&F Concept Nano-X series filter provides adjustable neutral density from ND2 to ND400, covering roughly one to nine stops of light reduction. It uses imported Japanese AGC optical glass with 28 multi-layer coatings to minimise reflection and glare. The ultra-slim 7.4 mm frame is designed to avoid vignetting at focal lengths as wide as 16 mm. Photographers and videographers who need continuous exposure control in bright conditions will find this filter suited to landscape and video work.

Check thread size and focal range

Verify that your lens has a 52 mm front filter thread before ordering. The ultra-slim frame supports wide-angle lenses down to 16 mm without vignetting, though the supplier notes that a dark cross pattern may appear with certain lens types and focal lengths. Ensure your shooting style accommodates variable ND rotation rather than fixed-stop filters. Buyers who need a fixed neutral density value or a larger thread diameter should look elsewhere.

Replaces multiple fixed ND filters

This single variable filter replaces a set of individual ND filters spanning the ND2 to ND400 range. The putter-style frame marks each stop for precise 360-degree adjustment, making the jump worthwhile for creators who frequently change light reduction during a shoot. Video users benefit from smooth, tool-assisted stop changes. It does not serve users who require infrared contamination control or a circular polariser function.