What is color separation? Is separation important? How to color separation in Photoshop?
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Separation is a printing professional term, referring to the decomposition of the various colors on the original into yellow, magenta, cyan, and black, and the color of the four primary colors; in computer printing design or graphic design image software, color separation work is The color mode of the scanned image or other source image is converted to CMYK mode. In general, the scanned image is in RGB mode, and the image taken with a digital camera is also in RGB mode. Most images downloaded from the Internet are also in RGB color mode. If it is to be printed, it must be separated into yellow, magenta, cyan and black colors. This is a requirement for printing. If the image color mode is RGB or Lab, there may be only dots on the K version when outputting, that is, the RIP interpretation only interprets the color information of the image as gray. In Photoshop, the color separation operation is actually very simple: just convert the image color mode from RGB mode or Lab mode to CMYK mode. The color of the image is thus represented by the colorant (ink) with 4 color channels. When the image is exported, the image will be generated from the color channel data and divided into yellow, magenta, cyan, and black four-color film films.