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Neutral Density Variable Filter K&F 40.5 mm KF Fader ND8–ND2000 adjustable (model SB6572)
Summary description:
K&F 40.5 mm KF Fader is an adjustable neutral density (ND) filter offering ND8 to ND2000 light reduction. Designed for 40.5 mm screw-mount lenses, it enables longer exposures and wider apertures in bright conditions. Useful for landscape, long-exposure, and motion-blur photography, the filter provides variable light control without stacking fixed ND filters.