PRO1D WIDE BAND CIRCULAR PL Filter allows you to remove unwanted reflection from nonmetallic surfaces such as water and glass. Kenko's CIRCULAR PL uses ne.wly developed, innovative polarising material. WIDE BAND makes Digital SLR camera's viewfinder image colour difference has been corrected. This medium-class ?lter series was developed in the mid-2000s when digital single-lens re?ex cameras were popular. Adopting digital multi-coat technology, these ?lters achieve an overall ?lter transparency of 99% (protector) with a minimum pricing premium. The ne.w-concept ?lter series employs a black-painted frame for reduced re?ection in the glass, a knurled frame for easy attachment, and other user-friendly features. These ?lters function well not only with digital cameras but also with ?lm cameras. Digital Multi-Coated Digital multi-coated filters greatly reduce the appearance of lens flare and ghosting caused by reflections. Black Almite Frame Filters feature a black matte aluminium 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. Specs: - Type: Pro 1 Digital Circular Polarising - Size: 72mm x 3mm thick - Grade: Not Applicable - Filter Factor : Between 2.3 and 2.8 (approx. +1.3 stops) - Multi-Coated: Digital Multi-Coated - Rotating: Yes - Effect: Removes reflections and increases colour saturation without affecting the overall colour balance - Application: Nature, travel, outdoor photography - Colour Temperature: Not Applicable - Construction: Glass - Front Filter Thread Size: 72mm - Front Lens Cap Size: 72mm