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

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Custom Functions I/II/III/IV

Custom Functions let you customize the behavior of your camera in a variety of different ways, ranging from whether or not the flash fires automatically to the function carried out when the Set button is pressed. If you don’t like the default way the camera carries out a particular task, you just may be able to do something about it. You can find the Custom Functions in their own menu, color-coded orange.

We can grudgingly thank Canon for redesigning and partially simplifying setting of Custom Functions when the EOS 40D was created. With this camera’s predecessor, the EOS 30D, all 19 functions were crowded onto one screen, with two cryptic rows of settings (from 01 to 10 on the top row, and 11 to 19 on the bottom ...

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