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Neutral Density Variable Filter K&F 49mm Fader ND8–ND2000 (model SB6574)
Summary description:
Variable neutral density (ND) filter by K&F with 49mm thread, model SB6574. Provides adjustable light reduction from approximately ND8 to ND2000 for controlling exposure, enabling slower shutter speeds and wider apertures in bright conditions. Useful for landscape, long-exposure, and motion-blur photography; fits lenses with 49mm filter thread.