Canon EOS REBEL T5I Instruction Manual page 75

Handy Features
_ Setting the Auto Power'off Time
To save battery power, the camera turns off automatically after the set
time of idle operation elapses. You can set this auto power-off time.
When the camera has turned off due to auto power off, you can turn it
on again by pressing the shutter button halfway or pressing any of the
following buttons: <MENU>, <IN}:O.>, <[_]>, <r_>, etc.
If [Disable] is set, either turn off the camera or press the < INFO. >
button to turn off the LOD monitor to save battery power.
Even when [Disable] is set, if the camera is not used for 30 rain.,
the LCD monitor will turn off automatically. To turn on the LOD
monitor again, press the <INFO.> button.
Under the [_2] tab, select [Auto power
off], then press <0 >. Select the desired
setting, then press <0>.
_ Adjusting the LCD Monitor Brightness
You can adjust the brightness of the LCD monitor to make it easier to read.
Under the [_,2] tab, select [LCD
brightness], then press <_)>. With the
adjustment screen displayed, press the
<4_ > key to adjust the brightness, then
press <_)>.
When checking the exposure of an
image, set the LCD monitor brightness to
4 and prevent the ambient light from
affecting the reviewed image.
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