Polarizing

Circular Polarizing filters

Circular Polarizing filters are used for the purpose of filtering out and blocking the reflected light from metallic and non-metallic surfaces when a particular orientation causes glares and unsaturated colors in your photos. A good way to think of these filters are comparing them to polarized sunglasses.They both reduce glares in bright light and sunny days, and increases saturation to give you rich colouring by filtering out the other reflections. Circular polarizing filters remove reflections from windows and glass as well and are much more suitable for the purpose of auto-focusing DSLRs.