Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 243)

2.
Set the white balance correction.
Sample setting: A2, G1
Use < > to move the “■” mark on the screen to your preferred
position.
B is for blue, A for amber, M for magenta, and G for green. White
balance is corrected in the direction you move the mark.
The direction and amount of correction are indicated in the upper right
of the screen.
Pressing the < > button will cancel all the [ WB Shift/Bkt. ] settings.
Press the < > button to exit setup.
Note
One level of the blue/amber correction is equivalent to approx. 5 mireds of a color
temperature conversion filter. (Mired: Unit of measure for color temperature used to
indicate values such as the density of a color temperature conversion filter.)
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