Canon EOS 77D Instruction Manual page 79

Displaying the Electronic Level in the Viewfinder
A simple electronic level using a camera icon can be displayed in the
viewfinder. Since this indicator is displayed during shooting, you can
take the picture while checking the camera tilt.
Electronic level
Even when the tilt is almost corrected, there may be a margin of error of
approx. ±1°.
3 Displaying the Electronic Level
Select [Viewfinder display].
1
Under the [52] tab, select

[Viewfinder display], then press
<0>.
Select [Electronic level].
2
Select [Show].
3
Press the shutter button halfway.
4
 The electronic level will appear at the
position shown in the illustration.
This level also works with vertical

shooting.
Horizontal
Tilt 1°
Tilt 2° or higher
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