Multi-Resistant Coating (MRC) filters and Nano coatings are the leading edge in lens protection and image quality improvement. These filters are particularly resistant to water and oil thanks to their nano-coating, which ensures that water droplets slide off the surface easily and do not leave streaks. MRC coatings also help protect against scratches and make the filter easier to clean, which is indispensable for photographers who work in diverse and sometimes harsh environments.