Control light and colour directly on your raw images at the time of .Keep the quality of your images without excessive post production work. Create effects saving time on your computer.Same filter for all your lenses by just replacing the adaptor ring.Otate, , decentre in all directions for more precision and creativity.Gradual filter is a MUST for digital users, because the digital sensor unlike film has low exposure tolerance. Detail will be lost on both low and high light area. To this, you need gradual filter to balance it.How to use:1. Screw the ring adapter onto your lens.2. the filter holder on the ring adapter until it snap in place.3. the filter (up to 3) into one of the filter holder slots.4. Mount Lens Hood onto your filter-holder by pressing on the upper and lower parts of the lens hood.Material:Aluminum alloycolour:blackPackage Contents:1 * G.ND2 filter1 * G.ND4 filter1 * G.ND8 filter1 * G.ND16 filter1 * ND2 filter1 * ND4 filter1 * ND8 filter1 * ND16 filter1 * Ring Adapter1 * 10-slots filter case1 * Lens Hood1 * 3 Slots Filter Holder1 * Wide Angle Filter HolderOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.