The 85 amber (warming) series of filters filter is used for exposing tungsten materials in daylight. They decrease color temperature thereby producing a warming effect and reducing blue casts. The 85 filter reduces color temperature from 5500k to 3400k. The glass filter is also available in 100x100mm, 144mm, 127mm and 168mm sizes. Formatt-Hitech glass filters are made from the world's highest quality optical glass, Schott Superwite.
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