Cokin Circular Polarising filters increase the colour saturation of blue skies and remove unwanted reflections from non-metallic surfaces such as glass, water etc. Use at an angle of 45 degrees to the light source and rotate the filter to adjust the polarising effect Protect your filter with a Lowepro Filter Pocket
![30.5mm - Cokin 30.5mm Circular Polarizing Filter](https://d31wxntiwn0x96.cloudfront.net/fcjtay/productimages/77.jpg?etag="1cfc021b465d0de8bd6de6285259d99a" "30.5mm - Cokin 30.5mm Circular Polarizing Filter")
