Canon EOS 350D Instruction Manual page 58

3 Custom White BalanceN
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If the exposure obtained in step 1 is underexposed or overexposed, a
correct white balance might not be obtained.
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If an image was captured while the processing parameter was set to [B/
W] (p.65), it cannot be selected in step 3.
Instead of a white object, an 18% gray card (commercially available) can
produce a more accurate white balance.
58
5
Select the custom white balance.
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Press the <S> key to select <
then press <0>.
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When you press the shutter button
halfway, the <
displayed on the LCD panel.
> icon will be
O
>,
O