PRO1D C-PL allows you to remove unwanted reflection from nonmetallic surfaces such as water and glass. Kenko's CIRCULAR PL uses innovative polarizing material. And it makes Digital SLR camera's viewfinder image color difference has been corrected.

This medium-class filter series was developed in the mid-2000s when digital single-lens reflex cameras were popular. Adopting digital multi-coat technology, these filters achieve an overall filter transparency of 99% (protector) with a minimum price premium. The new-concept filter series employs a black-painted frame for reduced reflection in the glass, a knurled frame for easy attachment, and other user-friendly features. These filters function well not only with digital cameras but also with film cameras.