Canon EOS REBEL T3 Basic Instruction Manual page 233

3 Menu Function Settings
[y] tab
Exposure compensation
You can set exposure compensation for movies up to ±3 stops in
1/3-stop increments.
Auto Lighting Optimizer
The Auto Lighting Optimizer can be set as explained on page 107.
If the [w] menu tab's [kHighlight tone priority] is set to
[Enable], the Auto Lighting Optimizer will be set automatically to
[Disable] and cannot be changed.
Custom White Balance
As explained on page 115, the image for custom white balance can
be selected. Note that still photos cannot be taken in the <k>
mode. Set a shooting mode other than <k> and take a still photo.
Then select it for the custom white balance.
Picture Style
The Picture Style can be set as explained on pages 79.
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