線性偏光鏡，6X6寸，4mm厚光學 Filter Types Available: 5 Filter Set: Star Soft Focus Soft Mist Black Graduated Neutral Density Graduated Blue Graduated Green Graduated Orange Graduated Red Solid Neutral Density (0.3, 0.6 & 0.9) Polarizer (FTG4X4PL) Polarizer Soft Mist Black OR Star Graduated Neutral Density Graduated Blue Graduated Orange