in printing color films , a color negative film has to be evaluated to determine the amount of exposure . a color balance adjusting apparatus has hitherto been used for appraisal . in the prior art , however , as all the picture images of a color negative film are displayed on a monitor tv for appraisal , it has a demerit in that a speedy inspection cannot be carried out . in addition , as the film picture images are displayed through crt images of a monitor tv , it is hard on the eyes compared with that by direct visual observation and , therefore , presents a drawback in processing capacity . accordingly , this invention aims at providing a method which greatly improves the processing capacity of inspecting the color films .