08-30-2012, 02:12 PM
Hi BC and Photonius:
Thank you for your response. I think that I understand it now. The doubled area of green cells on a Bayer sensor is used to increase the resolution of the image in green color and reduce the noise in green color which human eyes are most sensitive, not to increase the recorded density of green light.
However, I have another question: in a scene which has very large contrast people usually do not see that large contrast as a camera sees because human eyes respond to light differently than the camera sensor. As a result, the camera records an image with contrast much larger than that we have seen with our naked eyes. Assume that the camera indeed faithfuly recorded the contrast of the scene and produced an image that faithfully reflects the contrast recorded by the camera. But, why don't our eyes respond to the image the same way as to the true scene?
Best regards,
Frank
Thank you for your response. I think that I understand it now. The doubled area of green cells on a Bayer sensor is used to increase the resolution of the image in green color and reduce the noise in green color which human eyes are most sensitive, not to increase the recorded density of green light.
However, I have another question: in a scene which has very large contrast people usually do not see that large contrast as a camera sees because human eyes respond to light differently than the camera sensor. As a result, the camera records an image with contrast much larger than that we have seen with our naked eyes. Assume that the camera indeed faithfuly recorded the contrast of the scene and produced an image that faithfully reflects the contrast recorded by the camera. But, why don't our eyes respond to the image the same way as to the true scene?
Best regards,
Frank