40.5MM Circular Polarizer Glass Filter Ultra-Slim, 18 Multi Layer Coatings Nano-Klear

SKU: KF01.1307

Q
How to tell when rotating if it is polarizing? I cannot visibly see any difference when rotating.
Answer Question
A
Hi, this is CPL filter , for balancing the color, enhancing color and contrast, this is not ND filter , thanks.