Operation Manual

Evaluating Exposure
Histograms are good tools for evaluating exposure. For example, a series of peaks in the
darker side of the histogram often indicates an underexposed image that consists mainly
of dark pixels.
A series of peaks in the center of the histogram often indicates a balanced exposure
because a majority of the pixels are concentrated within the midtones of the histogram.
They’re not too dark or too bright.
However, a series of peaks in the brighter side of the histogram often indicates an
overexposed image because most of the pixels in the image are too bright.
470 Chapter 16 An Overview of Image Adjustments