1 pcs. Genuine : Brand New Made in Japan
HOYA PRO 1 Digital
CPL
Filter Multicoated
(DMC)
Size 55 mm
FREE Airmail
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HOYA PRO1 Digital Series - Key
Features
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Digital
Multi-Coated Digital multi-coated filters
greatly reduce the appearance of lens flare and ghosting caused by
reflections. |
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Black Almite
Frame Filters feature a black
matte aluminum satin finish almite frame which reduces
reflections. |
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Black Rimmed
Glass These filters are equipped
with black rimmed glass to reduce the chance of light reflecting off the edge.
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Low Profile
Frame Ultra thin filter frames to
help avoid vignetting on super wide angle lenses are also designed to hold a
lens cap. |
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Knurling Edge
Frame These filters are equipped
with a straight knurling edge for non-slip, easy attachment and
removal. |
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UV Protected
Case Filter cases are UV protected
to further lengthen the life of
filters. | |
Hoya Coating and
Multi-coating, the quality difference.
Hoya manufactures a full line of filters in both
standard and Hoya multi-coated. The difference between Hoya’s standard line and
that of other manufacturers is that Hoya standard filters have one layer of
anti-reflective coating applied to each surface of the glass. Many other
manufacturers standard filters are bare glass, and bare glass can reflect as
much as 9% of the light hitting it. This greatly increases the risks of flare
and ghosting.

This can be seen in a simple test. Take a bare glass
filter hold it so that light reflection off the surface can be seen. Then take a
long very thin object like a pin or the tip of a pen and hold it over the filter
so that its reflection can be seen. There will actually be two reflections of
the pin on the surface, one a little more pronounced than the other. The more
pronounced reflection is from the front surface and the lighter one is from
light reflecting off the rear surface.
Hoya’s single layer coating decreases light
reflection off the surface from approx. 9% to an average of 4-5%.

To provide photographers with a higher quality
professionals require, Hoya created the Multi-coated line of filters. These
filters have a 3 layer coating system that further reduces light reflections off
the surfaces of the glass, the average is only 1-2%. This means that 98-99% of
the light striking the filter is going through it, and depending on the type of
filter, into the camera lens and onto the film. These layers of anti-reflective
coating are bonded to the surface of the glass in a furnace at a temperature of
up to 800 degrees F.

You should
beware! Some other manufacturers claim
to have “coated” filters. But this coating is often only applied to the front
side of the glass, not both sides like Hoya filters. Also, the coating on many
filters is “painted” on or applied as a cold spray that wares off
easily.
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