Supplementary ND Lens For Cine/Movie cameras.

A neutral-density filter, or ND filter, is a filter that reduces or modifies the intensity of all wavelengths, or colors, of light equally, giving no changes in hue of color rendition. Used to achieve effects such as a shallower depth of field or motion blur of a subject in a wider range of situations and atmospheric conditions.

Good Condition. Minor marks from being used which do not affect its use.