Canon EOS Rebel SL3 DSLR Camera with 18-55mm Lens (Black) - Manual (Page 256)

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Information Display for HDMI Output N
You can configure information display for
image output via an HDMI cable.
z [With info]
The image, shooting information, AF points, and other information is
shown on the other device via HDMI. Note that the camera screen goes
off.
Recorded movies are saved to the card.
z [Clean / L output]
HDMI output consists solely of 4K movies. Shooting information and AF
points are also displayed on the camera, but no image is recorded to
the card. Note that Wi-Fi communication is not available.
z [Clean /
L
output]
HDMI output consists solely of Full HD movies. Shooting information
and AF points are also displayed on the camera, but no image is
recorded to the card. Note that Wi-Fi communication is not available.