The Tiffen Ultra Series 9 Circular Polarising Filter is an excellent filter designed to bring much more "punch" to your images. If a traditional polariser doesn't give you enough "pep", the "Ultra" polariser offers you a bit more. It will enhance your blue skies even further - making the difference between a good photograph and an exceptional image.,,Reflected light becomes polarised. Polarising filters are used to select which light rays enter your lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colours, providing better contrast. The effect can be observed through the viewfinder and modified by rotating the filter. The filter factor varies depending on the filter's rotation and its orientation to the sun.,,Water White glass is characterised by high transmission quality. Generally, it transmits 98 to 99% of light. It also possesses anti-glare and anti-reflection properties which make it useful in a wide range of applications, including the film industry, shop windows and art displays. The glass is virtually flawless and is increasingly used in digital equipment.,,,,- Your deep blue sky will become even "bluer",,- A highly efficient design,,- Manufactured from Water White glass