Co najmniej nie każdej:
"The response of the photodiodes to incoming light is sublinear, primarily as a result of the transfer characteristics of reverse-biased diodes used in a voltage-readout mode."
http://alt-vision.com/documentation/5074-35.pdf
"The non-linearity in the transfer characteristic must be accurately reversed to prevent shifts in color with brightness. Without correct linearization, the color matrix calculations will produce values that depend on the position of each of the color components on the non-linear curve.
If gamma correction is to be applied to the image, this must be done after all linear color calculations are completed"
http://alt-vision.com/documentation/5210-14.pdf
Oczywiście obaj możemy mieć racje - w zależności od punktu, przed - czy po linearyzacji - mamy dostęp do matrycy.