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The S+ Ultra Slim Pro MC UV from NiSi is a general use, clear filter designed to absorb ultraviolet light and reduce the bluish cast of daylight. No additional coloration or contrast is created, and adjustments to exposure are not required while using this filter. When the Filter is used, ultraviolet light waves are absorbed before which they are progressively eliminated, helping to limit the light that enters a camera to the visible spectrum. The appearance of blue casts that can occur while recording video or still photos under daylight that also features ultraviolet light is reduced, preserving color accuracy throughout the frame.

NiSi UV filters are constructed from optical glass for increased clarity as well as color fidelity while providing approximately 98.5% transmission of visible light. This filter features a 3.0mm thick aluminum-alloy filter ring for durability while remaining lightweight. It minimizes the potential for vignetting and includes corresponding front filter threads for use with other screw-on filters. To prevent internal ghosting and reflections, each glass surface also includes an anti-reflective, nano-coating that results in an improved beading effect when in contact with water for greater cleaning efficiency.