Tokina Cinema Formatt Hitech 6x6.6'' Circular Polarizer Filter Wide Lenses 5 Cinema Vista Prime Lens 5 Cinema Vista Prime Lens (EF Mount) is the ultimate fusion of cinematic craftsmanship and cutting edge optical engineering making it a solid choice for those seeking to enhance their cinematic capabilities without breaking the bank Control Reflections and Dial in the Right Amount of Contrast for your Scene using this Tokina Filter The first layer is a standard high efficiency linear polarization foil that will create the usual desirable blue sky and reflection cutting effects that polarizers are known for in cinematography