light weight, single filter weight is about 0.76-0.8g, and does not increase the gimbal load. | carefully preferred optical glass materials with stable optical properties and high uniformity. | CPL FILTER - It is mainly used to eliminate harmful non-metallic reflected light, and increase the color concentration. It also enhances blue sky, highlights white clouds, makes the picture more thorough, improves image clarity and overall creates a more expressive and vivid photo. It is also often used in shooting through glass, water and underwater scenery | ND FILTER - It reduces the amount of light in very bright conditions so that the camera can choose the correct exposure value and avoid excessive exposure. It also improves the color saturation of the picture, makes the picture more transparent and alive | MULTIPLE COATING OPTICS: minimize reflections, flares and improves image quality, Hydrophobic Nano coating reduces fingerprints fog, water, and dust.POLARIZED LENS FILTER: Polarized lens filters stay firmly attached, yet can be rotated easily so you can line up the correct polarization angle. The crystal clear glass is manufacture for high definition video