H&Y Magnetic ND Clip-on Filter is designed as a cross-polarization cure for wide or ultra-wide angle lenses. Cross polarization is a physical phenomenon on VND filters. While some VND designs will give a smaller range of ND stops to prevent it from happening, H&Y had decided to keep the vast ND range of REVORING with VND, offering full coverage up to 10-stop for users of telephoto or medium-telephoto lenses. 2 Grades (ND16,400) are available for 1 sizes of REVORING ( 67-82mm). H&Y Magnetic Clip-on Filter is compactible to REVORING with VND & CPL, REVORING with Black Mist Filter, REVORING with CPL, and other REVORING Variant, as long as there is a non-detachable filter on REVORING. For VND&CPL, a clip-on can be used for cross-polarisation solution or extension of the original 1-10stop ND range. For CPL, a sole ND can be used to achieve the dreamy long exposure effect. For Black Mist Filter, 2/3/4 stop ND can be used as a range of fixed ND filters as an aid to videography. H&Y aims to provide highly flexible choices for photographers’ hybrid use.