What is the difference between CMYK and RGB? Are there other color spaces I should know?

Question

I'm a photographer, who dabbles in graphic design from time to time as well. What are the differences between the various color spaces?

Answer 1

CMYK is reflected color -- light bounces of of a page/color. when all the color is absorbed what you see is black. RGB is transmitted color like the monitor you are looking at now or your TV or your phone.

You question about color spaces is not clear.