Traditional Culture Encyclopedia - Photography major - What is the special purpose of the color separator?

What is the special purpose of the color separator?

Color separation is also called "positive color". It is insensitive to red and orange light in visible light, but sensitive to yellow, green, cyan, blue and purple light. Color separation is mainly used in modern photography, such as printing plate making, remake of black and white charts and reproduction of darkroom stunts. Usually, shooting is basically unnecessary.