標板有24個純色塊，從左到右再從上到下，分別標記為1-24。所以又叫24色卡。 對於攝像頭色彩與白平衡的測試，我們採用了標準色卡ColorChecker在不同的環境下使用相應的白平衡模式拍攝進行比較，一方面可以觀察機型對各種色彩的還原情況，另一方面可以觀察他們的白平衡準確度。
The ColorChecker is a checkerboard array of 24 scientifically prepared colored squares in a wide range of colors. Many of these squares represent natural objects of special interest, such as human skin, foliage and blue sky. These squares are not only the same color as their counterparts, but also reflect light the same way in all parts of the visible spectrum. Because of this unique feature, the squares will match the colors of natural objects under any illumination and with any color reproduction process.