Most digital imaging sensors work similar to the human eye, in that they are sensitive to the three primary colors red, green and blue. While there are differences in their individual design (most notably between classic Bayer pattern sensors, Sigma's three-layer Foveon sensors and Fujifilm's X-Trans sensor), the basic principle remains the same.
The problem with conventional sensors, however, is that their individual pixels are sensitive only to specific wavelengths of light, as they are covered by either a red, green or blue color filter. This means that a…
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