B + W 37mm 80C / 80D, Tungsten to Daylight Conversion Glass Filter (KB6)

"80" series filters are color conversion filters for the use of daylight type color films with artificial light source.
•80A increases the color temperature from 3200°K to 5500°K for the use with 3200°K lamps (household incandescent bulbs).
•80B increases the color temperature from 3400°K to 5500°K for the use of photoflood lamps.
•80C increases the color temperature from 3800°K to 5500°K for the use of clear flash bulbs.
•80C & 80D can also be used to reduce the strong red tendency of morning and evening light.
•Another use is the optical reduction of extreme yellow, orange and red elements of scenes.
•Available in all popular sizes.