The name of the new lens filter series refers to the letters in EXUS, where EX means Excellent and EXperience, U equals Ultimate and S means Specifications (EXUS conveys the ultimate specifications based on Marumis expertise and technology in making lens filters).
Key features of the new Marumi EXUS line include Ultra Low Reflection (about only 0.3%) or 99.7 transmission, new slim mounts and Anti-Static Coatings (ASC) that keeps dust away from the filters surface. Made with Superwite B270 Schott glass, one of the finest optical glasses in the world made in Germany. Marumi EXUS lens filters feature improved coatings having excellent water & oil repellency ..Super Easy to clean (water and oil spots are easily removed from the lens filters surface you can keep the EXUS filters super clean...no dust or residues).
The 1st lens filter available in the world with Teflon coatings on the filter threads for easy mounting and removal. Very useful on any of todays high end lenses, Most having ABS plastic front filter threads and mounts for bayonet lens hoods.