Light is the specter that hovers arounds photographic technologies. From analog to digital and from light-sensitive coating to computer algorithms, light always occupies an irreplaceable place in competing image-making technologies. Throughout the process of negotiating with light, however, it is now obvious that human prejudices have unknowingly and almost imperceptibly infiltrated this competition. Filmmaker Godard is one of the first people who became aware of this crisis: when he was in Mozambique assisting the African country’s development of image in the 70s, he realized that Kodak films that were mainstream of the time could not be accurately exposed for portraits featuring subjects of dark skin tones. We cannot simply attribute this technical failure to inadequate equipment for the reason that even the most advanced algorithms used today still show a rather high error rate when determining certain races and skin tones.