J.U.N UNX-9618 SUPER PROTECT FILTER 22.5mm UN eins SUPER PROTECT FILTER 22.5mm ================================ The following is an excerpt from an online shopping site ================================ This is a UN original eins super protect filter for classic lenses, pursuing ultimate thinness (1.2mm thick when attached). It uses glass made by the world-renowned glass manufacturer SCHOTT, and features a water-repellent/oil-repellent coating, ink treatment on the outer circumference of the lens, and a reflection rate of 0.3% or less. The design is a nostalgic classic shape, resulting in a filter with a strong commitment to detail. eins super protect filter series This is a UN original eins super protect filter for classic lenses, pursuing ultimate thinness (1.2mm thick when attached). It uses glass made by the world-renowned glass manufacturer SCHOTT, and features a water-repellent/oil-repellent coating, ink treatment on the outer circumference of the lens, and a reflection rate of 0.3% or less. The design is a nostalgic classic shape, resulting in a filter with a strong commitment to detail. Due to the digitalization and the resulting smaller lenses, and the prevalence of bayonet-type lens hoods, the design intentionally omits threads on the front of the filter to pursue thinness. Also, the engraving on the filter frame is kept to a minimum, with only the filter diameter engraved, to pursue simplicity.