Fuhjythy 67mm CPL Universal with Clip Portable Professional Polarizer Camera Lens Filter for Smartphones Mobile Phone

What is ND (neutral density filter)? Also called neutral density filter, its function is to reduce the entry of light when , Neutral density filter plays a very important role in a good photo. Ultra-clear optical glass - ND filter is made of optical glass material, double-sided multi-layer coating, which can enhance transmittance and reduce reflectivity. Low color cast, restore color, and improve image quality. Mainstream mobile phones can be used - 67mm large opening, suitable for more than 99% of models, without blocking the mobile phone lens.