But all megapixels are not created equal. Unlike the CMOS and CCD imaging sensors used in cameras from other makers, which place red, green, and blue filters over different pixels on a monochromatic sensor, the Foveon X3 creates a color image by reading out color data from each of three separate layers sensitive to red, green, and blue. As a result, the sensor acts more like film does when capturing an image, helping to reduce moiré patterns and other artifacts in the very fine details of a typical image.



Link: Pop Photo