The 67mm Pro Dark CPL Filter from Kolari Vision offers standard CPL functionality while doubling as a 5-stop ND filter. The ND aspect darkens the image by five stops of light but doesn't negatively affect the CPL qualities of the filter. As a CPL, the filter helps reduce reflections, cut through atmospheric haze, and boost color saturation and vibrancy. One CPL application this filter can be used for is to shoot through glass, such as windows or car windshields.

The filter is designed with two pieces of glass. When the front element of the filter is rotated, the two glass sections are adjusted to produce the desired result for different environments. The glass optics are multicoated to reduce reflections, increase light transmission, reduce flares and ghosting, and make the filter resistant to water, dust, scratches, and fingerprints. The filter ring is made of low-profile aluminum with knurled edges and 67mm threading on both sides.