The NiSi 100x100mm Square HD Polarizer filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

The NiSi 100x100mm Square HD Polarizer is made of the highest quality optical glass, the polarising film is the best on the market and offers a very high polarisation close to 100%. This plate filter offers circular polarisation and should be used on holders for 100mm and 2mm thick filters. Compatible with NiSi V5, V5 PRO, V6 and filter holder holders of other brands that support filters of 100mm width and 2mm thickness.