B: Matching The Light Source (White Balance); O Custom White Balance - Canon EOS Rebel T4i 18-135mm IS STM Lens Kit Instruction Manual

B: Matching the Light SourceN
The function adjusting the color tone so that white objects look white in
the picture is called white balance (WB). Normally, the <Q> (Auto)
setting will obtain the correct white balance. If natural-looking colors
cannot be obtained with <Q>, you can select the white balance that
matches the light source or set it manually by shooting a white object.

O Custom White Balance

Custom white balance enables you to manually set the white balance
for a specific light source for better accuracy. Perform this procedure
under the actual light source to be used.
Spot metering circle
Press the <WB> button.
1
[White balance] will appear.
Select the white balance.
2
Press the <U> key or turn the
<6> dial to select the desired white
balance, then press <0>.
The "Approx. ****K" (K: Kelvin)
displayed for the white balance
settings <W>, <E>, <R>, <Y>
or <U> is the respective color
temperature.
Photograph a white object.
1
The plain, white object should fill the
spot metering circle.
Focus manually and set the standard
exposure for the white object.
You can set any white balance.
135