ZOMEI 150 x 100 mm Square Neutral Density Filter ND2+ND4+ND8+ND16 for Cokin Z LEE 4pcs square filter kit includes ND2,ND4,ND8,ND16. Neutral Density (ND) filters can reduce the intensity of light without appreciably changing its color. Compatible with Cokin Z-PRO Series, need to work with Z Series holder and adapter ring. Ultra-thin high optical resin,the light transmittance over 98%,do not affect the original color. Zomei 100*150mm square gradient lens is made of high quality optical resin lenses,uniform color,exquisite workmanship,fine packing, is filming in landscape photography.Come up with a good image,at the same time,spend the least money,domestic Zomei insert gradient lens is definitely the best choice for you.