国际照明委员会规定了用于测量物体色的四种照明/观测条件,其中d/0条件最接近于通常情况下人眼观察物体的实际情况。 有些行业规定只能在该条件下评价样品的颜色。

• CIE specified 4 illuminating/viewing conditions for object color measurement. Among these conditions, d/0 is most close to the actual condition under which human beings aberve objects, and even in some fields, d/0 condition is the only permitted condition for evaluating color.