LEE Filters ND75 Very Hard Grad 100mm This is a LEE rectangular half ND filter. 100mm x 150mm, 0.75ND (2.5 stops), Very Hard Unused. (Please understand that this item has been stored at home.) Instant purchase OK, no price negotiations. This half ND filter has a very distinct boundary between the ND section and the transparent section of the gradient. It balances the brightness between the sky and the land. It is ideal for seascapes where the sky and land are clearly separated by the horizon.