Hoya Y7POLC049 Fiche technique télécharger pdf (Page 4)

Premium Performance in Lens Protection

and Image Enhancement

HARDENED GLASS

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.

HIGH TRANSPARENCY POLARIZING FILM

The polarizing film is the same as that used in the latest high

definition LCD TV screens. It has 25% higher light transmission than

standard polarizing film used in current photographic filters.

HARDENED 8 LAYER WATERPROOF MULTI-COATING

THAT IS SCRATCH & STAIN RESISTANT

Newly developed industry leading 8-layer multi-coating yields an

average light transmission rate of 99.35% between 400 and 700nm

(visible spectrum). These coatings greatly reduce reflections off the

surface of the glass allowing you to capture more light in your photos.

As with all HOYA multi-coatings,HD HMC is applied in a furnace at

high heat, bonding the coating to the surface of the glass. This

process is called "hard coating" and it is far more durable than other

coating techniques. The chemistry of the top layer is formulated not

just to be more durable but to be resistant to oil stains. This means

that finger prints and other oils are much easier to remove.

FILTERS

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