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Canon® EOS Rebel XSi/450D Guide to Digital SLR Photography by David D. Busch

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Adjusting White Balance

I showed you how to adjust white balance in Chapter 3, using the XSi’s built-in presets, white balance shift capabilities, and white balance bracketing (there’s more on bracketing in Chapter 4, too).

In most cases, however, the Rebel XSi will do a good job of calculating white balance for you, so Auto can be used as your choice most of the time. Use the preset values or set a custom white balance that matches the current shooting conditions when you need to. The only really problematic light sources are likely to be fluorescents. Vendors, such as GE and Sylvania, may actually provide a figure known as the color rendering index (or CRI), which is a measure of how accurately a particular light source represents standard ...

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