B+W UV Filter 77mm The UV Filter is a general use, clear filter that helps to absorb ultraviolet light and reduce the bluish cast of daylight. No additional coloration or contrast is provided, allowing you to pair this filter with others. The UV filter is also useful as a general protective filter to leave on lenses at all times. Filters help to reduce dust and moisture from reaching your lens element and provide additional protection in case of drops or situations where scratching could occur. The Multi-Resistant Coating (MRC) is both an anti-reflection coating as well as a protective surface. It helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, it offers greater protection to the filter substrate and stays cleaner for longer than uncoated filters. The UV filters are constructed from high quality glass for increased optical clarity and color fidelity. - Absorbs UV light and reduces bluish cast of daylight. - Clear filter provides no additional coloration or contrast, allowing you to pair this filter with others. - General protection filter reduces dust, moisture, and scratches from reaching lens elements. - Multi-Resistant Coating offers both protection to the glass and helps to improve light transmission and image quality. - Constructed from high quality glass for optical clarity. - Black Almite Frame helps to prevent jamming and provides additional strength.