A three-CCD camera is a camera whose imaging system uses three
separate charge-coupled devices (CCDs), each one taking a
separate measurement of the primary colors, red, green, or blue
light. Light coming into the lens is split by a trichroic prism
assembly, which directs the appropriate wavelength ranges of
light to their respective CCDs. The system is employed by still
cameras, telecine systems, professional video cameras and some
prosumer video cameras. Compared to cameras with only one CCD,
three-CCD cameras generally provide superior image quality
through enhanced resolution and lower noise. By taking separate
readings of red, green, and blue values for each pixel, three-
CCD cameras achieve much better precision than single-CCD
cameras. By contrast, almost all single-CCD cameras use a Bayer
filter, which allows them to detect only one-third of the color
information for each pixel. The other two-thirds must be
interpolated with a demosaicing algorithm to 'fill in the gaps',
resulting in a much lower effec