The HD nano Mk II coatings are the toughest, most scratch and stain resistant coatings offered by any manufacturer. The HD nano Mk II UV filter is a filter with a UV blocking curve that does not affect the visible light range. In addition, this filter features a new active coating that protects the lens from rubbing while allowing for easy cleaning of water spots and fingerprints. The HD nano Mk II glass is a 4x stronger, chemically enhanced optical glass. The newly developed coating adheres to the glass surface more firmly and densely than before due to the nano level. As a result, the particles are layered on the glass surface with extremely high density, resulting in a hard and smooth coating.
