Lenmar 30.5mm Camlink CPL filter
30.5mm circular polarizing (CPL) filter
Ever try to take a head-on photograph from outside a car of your friend behind the wheel? Good luck with that. Chances are all you'll see is a great reflection of the sky and clouds in the windshield. Lenmar's 300.5mm Camlink CPL (Circular Polarizing) filter eliminates reflections from nonmetallic surfaces, and it's a lot less trouble than removing auto glass.
This is not a linear polarizing filter