Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 186)

[ ] Color Temperature
A value can be set representing the white balance color temperature.
1.
Select [ : White balance].
2.
Set the color temperature.
Select [ ].
Turn the < > dial to set a color temperature, then press < >.
The color temperature can be set from approx. 2500K to 10000K in
100K increments.
Note
When setting the color temperature for an artificial light source, set the white
balance correction (magenta or green bias) as necessary.
When setting [
] to a value measured with a commercially available color
temperature meter, take some test shots in advance and adjust the setting as
needed to compensate for any difference between the color temperature meter and
the camera.
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