Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 142)

Caution
If the lowest aperture value blinks, it indicates underexposure.
Turn the <
> dial to set a slower shutter speed until the aperture value stops
blinking or set a higher ISO speed.
If the highest aperture value blinks, it indicates overexposure.
Turn the <
> dial to set a faster shutter speed until the aperture value stops
blinking, or set a lower ISO speed.
Note
Shutter speed display
For example, “ 0"5 ” indicates 0.5 sec. and “ 15" ”, 15 sec.
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