Circular Polarizer (CPL) Filter for Canon EF 70-300mm f/4-5.6 IS II USM

This circular polarizing (CPL) filter for the Canon EF 70-300mm f/4-5.6 IS II USM eliminates unwanted reflections from non-metallic surfaces like water and glass while boosting color saturation and contrast—ideal for richer blue skies and more defined white clouds. CPL filters work by arranging and filtering directionally polarized light perpendicular to reflected light, allowing much of that light to be absorbed; the effect is strongest at a 90° angle from the sun and also helps reduce haze in distant landscapes for more vivid, saturated tones. Built with an ultra-slim aluminum frame to prevent vignetting yet preserve rotation for level adjustments, it includes a nonslip upper rim for easy installation, rotation, and removal. Both sides feature double-sided, multi-layered coatings that are anti-oil, anti-dust, anti-soil, and resistant to scratches and water.