Tiffen 52mm 85B Filter

These are color conversion filters for the use with daylight type color films under artificial light sources. 80A increases the color temperature from 3200 degrees Kelvin to 5500 degrees Kelvin for the use with 3200 degrees Kelvin lamps. 80B increases the color temperature from 3400 degrees Kelvin to 5500 degrees Kelvin for the use of photoflood lamps. 80C increases the color temperature from 3800 degrees Kelvin to 5500 degrees Kelvin for the use of clear flash bulbs.