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B+W 49mm KR-3 (81C)

With approximately twice the strength of the KR 1.5, the KR 3 filter reduces blue and green. Even the strong blue cast of a high standing sun in a cloudless azure-blue sky, in regions with especially clear air, or the haze in distant views is removed very effectively. This filter also blocks disturbing UV radiation completely. Its filter factor is approximately 1.2.
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