Traditional Culture Encyclopedia - Photography major - How to use this 24-color card? I think it's called a color check chart in English.

How to use this 24-color card? I think it's called a color check chart in English.

Color card is a common color card in photography industry. There are 24 colors on it, referred to as "24-color card" for short, including 6 gray-scale color blocks, 3 additive colors (red, green and blue), 3 subtractive colors (yellow, magenta and cyan), skin color and real colors that simulate natural objects. The standard size is 2 1.59 * 27.