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Canon EOS 40D Guide to Digital Photography by David D. Busch

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Adjusting White Balance and ISO

If you like, you can custom tailor your white balance (color balance) and ISO sensitivity settings. To start out, it’s best to set white balance (WB) to Auto, and ISO to ISO 100 or ISO 200 for daylight photos, and ISO 400 for pictures in dimmer light. You’ll find complete recommendations for both these settings in Chapter 4. You can adjust either one now by pressing the Metering Mode-WB button (for white balance) and rotating the Quick Control Dial, or ISO-Flash Exposure Compensation button (for ISO sensitivity) and rotating the Main Dial until the setting you want appears on the status LCD. Both buttons are shown in Figure 1.11.

If you’ve been playing with your camera’s settings, or your 40D has been used by ...

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