The Color-Pro 3F is specifically designed for measuring the photographic color temperature of flash and ambient light, and to indicate the measured re

The Color-Pro 3F is specifically designed for measuring the photographic color temperature of flash and ambient light, and to indicate the measured results in degress Kelvin (K). After comparing the color temperature measured with the pre-selected color temperature of the film, (in degrees Kelvin), the Color Pro 3F calculates the filter values required to achieve photographs without color casts.