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The HOYA HD Digital UV Filter 58mm features hardened optical glass that has 4 times the breaking strength in ANSI standardized testing ANSI Z80.3 2001 where a steel balls of varying size and weight were dropped from a height of 50 inches onto the glass.The HOYA HD Digital UV Filter is a multi purpose fine weather filter, it will absorb the ultra violet rays which often makes outdoor photographs hazy and indistinct, this UV Filter could also be used as a permanent lens protector.Newly developed industry leading 8 layer multi coating yields an average light transmission rate of 99.35% between 400 and 700nm visible spectrum.HD Glass High Density Sharp Cut UV Glass Chemically Enhanced Optical Glass is 4x StrongerHD Coating 8 layer Anti Reflective Multi Coating Water Oil Repellent, Scratch Stain ResistantHD Frame Wide Angle Lens Compatible Ultra Thin Frame Glass Mounted with High Pressure Press Technology
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