When it was invented, photography could only be in black and white. The search for the color was a long and difficult process, and for many decades, the color was applied by hand on the exposed plates.
not remember the name of the photographer but these (about two centuries ago) had three shots to a subject by putting colored overlapping of colored filters over the lens.
realize all three "shots" and they overlapped and the result was a color image. Today
sensors work almost the same principle.
The primary colors are Red, Green, Blue (RGB). When the three colors are combined in the same way, you get white light. This RGB (CMYK or other) is used when it comes to light as a mix for TV (born in the 50 approx.)
There will lnga a tirade on RGB or CMYK, or LAB or other means, or how overlapping green and red pixels that make up the color ... there is information galore on the web ... So who wants to challenge themselves ... just use google and it will be done.
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