Canon EOS Rebel T4i 18-135mm IS STM Lens Kit Instruction Manual page 118

Setting Exposure CompensationN
y Flash Exposure Compensation
Set flash exposure compensation if the flash exposure of the subject
does not come out as desired. You can set the exposure compensation
up to ±2 stops in 1/3-stop increments.
If [z2: Auto Lighting Optimizer] (p.123) is set to any setting other than
[Disable], the image may look bright even if a decreased exposure
compensation or decreased flash exposure compensation is set.
You can also set flash exposure compensation with [Built-in flash settings]
in [z1: Flash control] (p.216).
118
Press the <Q> button.
1
The Quick Control screen will appear
(p.44).
Select [y].
2
Press the <S> key to select [y*].
[Flash exposure comp.] will be
displayed at the bottom.
Set the exposure compensation amount.
3
To make the flash exposure brighter,
turn the <6> dial to the right
(increased exposure). To make it
darker, turn the <6> dial to the left
(decreased exposure).
When you press the shutter button
halfway, the <y> icon will appear in
the viewfinder.
After taking the picture, cancel the
flash exposure compensation by
setting it back to 0.
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