Rangers Clarity Series ND Filter kit Includes Full ND2, ND4, ND8, ND16 Filters + Graduated ND2, ND4, ND8, ND16 Filters + 9 PCS Adapters + 1 Adapter Holder + Carrying Case + Lens Cleaning Cloth RA014 To enable slow shutter speeds to be used, especially with fast filming. Also good for recording movement in subjects such as waterfalls, clouds, cars, seas, etc. To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background. To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which would normally cause over-exposure. Made of high quality optical resin with multi-Coated, effectively prevent the lens to be scratched Anti-oil and Water resistance design.