Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 514)

Adjustment information not detected
Caution
Under difficult shooting conditions for AF ( ), the guide frame may not be
displayed correctly.
Higher aperture values are more likely to prevent correct guide frame display.
No AF points are displayed while the guide frame is displayed.
The guide frame is not displayed in these situations.
• When the focus mode is set to AF on the camera or lens
• When display is magnified
• When digital zoom is set
The guide frame is not displayed correctly during shifting or tilting of TS-E lenses.
Note
The camera's auto power off counter does not count time spent adjusting the focus
with a lens's electronic focusing ring.
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