Canon EOS 6D Mark II Mode D'emploi page 132

B: Setting the White BalanceN
White Balance
To the human eye, a white object looks white regardless of the type of
lighting. With a digital camera, the white for color correction basis is
decided depending on the color temperature of the illumination, and
then the color is adjusted with software to make the white areas look
white. With this function, you can take the pictures with natural color
tones.
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