Canon EOS REBEL T8i Advanced User's Manual page 136

3.
Select [Creative filters] with Quick Control.
Press the <
Use the <
press <
4.
Select a filter effect.
Turn the <
< >.
The image is shown with the filter effect applied.
Note
If you do not want the Live View image to be displayed when
setting functions, press the <
[Choose filter].
> button ( ).
> < > keys to select the icon in the upper left, then
>.
> or < > dial to select a filter effect (
136
> button after step 1 and select
), then press