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

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Electronic Flash Basics

Until you delve into the situation deeply enough, it might appear that serious photographers have a love/hate relationship with electronic flash. You’ll often hear that flash photography is less natural looking, and that the built-in flash in most cameras should never be used as the primary source of illumination because it provides a harsh, garish look. Indeed, most “pro” cameras like the Canon EOS 1D Mark III and 1Ds Mark III don’t have a built-in flash at all. Available (“continuous”) lighting is praised, and built-in flash photography seems to be roundly denounced.

In truth, however, the bias is against bad flash photography. Indeed, flash has become the studio light source of choice for pro photographers, because ...

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