82mm C-PL (Circular Polarizer) Multicoated Filter — Multithreaded Metal Ring for Pentax K-20D

This 82mm C-PL (Circular Polarizer) is made for use with the Pentax K-20D and reduces light transmission between 2.3 and 2.8 (approx. +1.3 stops). Optical construction features heat-treated, multicoated glass in a slim profile to help minimize vignetting, making it suitable for both video and photography. The filter is housed in a rugged metal filter ring with a black finish and is multithreaded to allow mounting additional lenses or stacking filters on top.