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Although the output from the color matrix shows true RGB colors , it does not take into account the lighting on a scene that has been color balanced . The length of the waves of light determine what color the light is . Explaining the words He had read , He spoke of the Messiah as a reliever of the oppressed , a liberator of captives , a healer of the afflicted , restoring sight to the blind , and revealing to the world the light of truth . * The imaging process involves illuminating a sample with polarized light , which has its electric field oriented in a particular direction , and using a digital camera with a rotating polarization filter to image the light scattered from the sample . The response of the three cone types is represented in the bar graph to the right , and a small disk shows what color the light is .