Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 425)

False Color Settings
False Color Display
Color-coded display in six colors based on the brightness level is shown on the screen
during movie recording. This can help you adjust the exposure.
1.
Select [ : False color set.].
2.
Select [False color].
Select [ On ].
3.
Adjust the exposure as needed ( ).
Adjust the exposure, referring to false color descriptions in False Color
Display if necessary.
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