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

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Operational Enhancements

The Canon EOS 40D has lots of operational improvements, too. These enhancements make the camera easier to use and add capabilities. Here are the key changes you’ll want to know about.

  • Added viewfinder information: The current ISO setting is visible in the viewfinder when the display is active, and an icon has been added that shows when the 40D has been set to black-and-white mode.

  • Flexible Auto ISO function: The EOS 30D can adjust ISO for you automatically within the range of ISO 100 to 400, but only in Auto and other Basic Zone modes. The 40D has additional options: It can choose between ISO 100-800 in certain Basic Zone modes (Auto, Landscape, Close-up, Night Portrait, and Flash Off); adjust between ISO 400-800 in Sports ...

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