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The Hoya Pro 1 Digital Circular Polarizer takes advantage of Hoya's patented optical glass technology to create a hardened glass that is thinner than the normal optical glass. This allows the overall thickness of the filter to be reduced to avoid vignetting when used with ultra-wide angle lenses.
Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect can be seen through the viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun.
Note: Circular polarizers are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems and video cameras without problems); Pro 1 Digital filters are ultra thin but have a front thread
Digital Cameras Need Multicoated Filters
Digital camera CCD or CMOS sensors are highly susceptible to reflections - this stray light can ruin your photographs! Don't risk your valuable photos by using bare-glass filters
Digital multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by reflections
Black Almite Frame
Filters feature a black matte aluminum satin finish Almite frame which reduces reflections
Black Rimmed Glass
These filters are equipped with black rimmed glass to reduce the chance of light reflecting off the edge
Low Profile Frame
Ultra thin filter frames to help avoid vignetting on super wide angle lenses are also designed to hold a lens cap
Knurling Edge Frame
These filters are equipped with a straight knurling edge for non-slip, easy attachment and removal
UV Protected Case
Filter cases are UV protected to further lengthen the life of filters
Effect can be seen through the viewfinder and changed by rotating the filter
Polarizing filters do not affect the overall color balance of a shot
The filter factor varies according to how the filter is rotated and its orientation to the sun
Pro 1 Digital Circular Polarizing
82mm x 3mm thick
Between 2.3 and 2.8 (approx. +1.3 stops)
Removes reflections and increases color saturation without affecting the overall color balance