Arcrest, Nikon’s Original High-Performance Protection Filter, Made in Japan. Minimal Ghost & Flare: Nikon Arcrest is the industry first – with “Zero-One AR Coating”, ultra-low reflection is achieved as low as approx. 0.1%. Superior Flatness Accuracy: Achieved with high-precision polishing minimizing the effect on the image quality of the lens. Highly recommended for (Nightscapes, astral and landscape photography. Excellent Water & Oil Repellency & Thin Frame Design: Minimal chance of water, oil or fingerprints staying on the filter surfaces and a frame design as thin as 3.4mm*.