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

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Manual Exposure

Part of being an experienced photographer comes from knowing when to rely on your EOS 40D’s automation (including P mode and Basic Zone settings), when to go semiautomatic (with Tv or Av), and when to set exposure manually (usingM). Some photographers actually prefer to set their exposure manually, as the 40D will be happy to provide an indication of when its metering system judges your manual settings provide the proper exposure, using the analog exposure scale at the bottom of the viewfinder and on the status LCD.

Manual exposure can come in handy in some situations. You might be taking a silhouette photo and find that none of the exposure modes or EV correction features give you exactly the effect you want. Set the exposure ...

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