Canon EOS R3 Advanced User's Manual page 1006

(27) Overheat control
(28) Movie self-timer
(29) AE lock
(30) Shutter speed
(31) Aperture value
(32) Canon Log
(33) Overheating
(34) Overheating warning
(35) Focal length
(36) ISO speed
(37) Highlight tone priority
(38) Exposure compensation
(39) Exposure level indicator (metering levels)
Caution
You can specify the information displayed in response to pressing the <
button ( ).
The electronic level is not displayed when the camera is connected via HDMI to a
television.
The electronic level, grid lines, and histogram cannot be displayed during movie
recording (and if they are currently displayed, recording a movie will clear the
display).
Time available per recording changes to elapsed time after movie recording begins.
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