: Promaster 46mm Protection HGX Prime Filter : Electronics. Repellamax II anti-static barrier resists dust, dirt, oil, water, and fingerprints. 。 HGX Prime filters are made from ultra hardened glass with scratch resistant coatings. 。 The number of coatings required varies depending on the specific style of filter being created. HGX Prime filters are crafted with between 18-22 layers of optical coatings and use black rimmed glass to cleanly pass light to the image sensor. 。 HGX Prime Circular Polarizing filters are made with High Transmission Film which permits 30% more light to pass. This allows the use of faster shutter speeds and better results when hand holding the camera. 。 HGX Prime filters are made in Japan where pride in craftsmanship still rules every step of the manufacturing process. The raw materials are carefully chosen and must meet exacting standards. Hand inspection and meticulous testing occurs to every filter repeatedly throughout the time consuming effort to create HGX Prime filters. Think clean rooms, engineers in lab coats, and proprietary coating technology, with diligent oversight. The HGX Prime factory is a third generation, family owned business with a long history of setting the benchmark for top-tier optical products. 。 。 。
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