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Canon 30D User Manual

Page 32

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Page 32 of 35

© Ken Rockwell 2006

Histogram must be set to RGB. The Brightness (default) setting is useless,
as are all single-channel histograms. This is a major reason to buy the 30D
over the 20D. Read more at Histograms and Color Histograms. The
Brightness setting can lead you to think you have a good exposure, when in
fact you could have heinous overexposure, which would be obvious on the
RGB histogram. The Brightness setting is only helpful for B/W photos, it's
worse than useless in color.