
The 3 blue filters of series 80 are technical conversion filters for use with daylight films under artificial lighting with tungsten lamps or other warm sources. The most powerful conversion is that of filter 020 (80A), each filter of the series lessening in intensity form there. These filters can help correct the prevailing colours of tungsten bulbs. For indoor shoots, stop before completely correcting the dominant warm tone so as to maintain ambiance. Can be used as a day for night filter when shooting in the middle of the day. Conversion of 3, 000K to 3, 200K. +2/3 stop. Please note: A Cokin adaptor ring (sold seperately) & Cokin Z Pro Filter Holder (sold seperately) are required to use this filter.