HOYA POLARIZED HD FILTER 77MM

HoyaSKU: 805560

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Sale price€105,12

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Description

HOYA HD circular polarizing filter diam. 77mmThe polarizing filter blocks polarized light, preventing its passage: this affects light reflected from many (non-metallic) surfaces, which is polarised. For example, unpleasant reflections on smooth surfaces can be reduced, and transparency can be restored to a sunlit stream, which would otherwise appear white or very clear due to light reflection. Likewise, the sky is made clearer and saturated by blocking the light reflected from the water vapor present in the air. The HD Series Circular Polarizers are made with the adoption of an exclusive Hoya polarizing film, which improves the passage of light by over 25%. The Hoya HD Series Circular Polarizers "absorb" approximately 2 stops on average, while a Polarizer Circular made with traditional technologies "absorbs" on average over three stops. Hoya HD Filters represent "the state of the art" in the field of photographic filters, and are characterized by: 8-layer anti-reflection treatment on both surfaces of the optical glass. They therefore guarantee a transmission equal to 99.353% of the light that reaches the filter itself. A breakage resistance 4 times higher than that of a conventional photographic filter. This result was obtained thanks to the adoption of particular hardening treatments that Hoya has developed to make its ophthalmic lenses compliant with the ANSI Z80.3.2001 regulation, required for the marketing of prescription lenses in the USA. This hardening treatment is also very effective in preventing scratches. Anti-stain treatment which makes the surface of the filter much easier to clean and resistant even to indelible inks. Ultra-Slim frame made of very high stability aluminium, treated with a "black" external finish alamite". The filter is therefore suitable for mounting on

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