Tiffen 55CP Circular Polariser Filter, blue, 55mm

The effect can be seen through the viewfinder and changed by rotating the filter Filter factor varies between 2.3 and 2.8, according to how the filter is rotated and its orientation to the sun Best results with SLR/DSLR cameras Designed for lenses specifying a 55mm filter thread size Rotating mount Reduce unwanted reflection Deepens blue sky's 10-year warranty