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4
Taking Pictures
A histogram shows the
brightness distribution of an
image. The horizontal axis
represents brightness (dark at
the left and bright at the right)
and the vertical axis represents
the number of pixels.
The shape of the histogram before
and after shooting tells you
whether the brightness and contrast are correct or not, and lets you decide
if you need to use EV compensation and take the picture again.
Understanding Brightness
If the brightness is correct, the graph peaks in the middle. If the image is
too dark, the peak is on the left side, and if it is too bright, the peak is on
the right side.
Understanding Contrast
The graph peaks gradually for images in which contrast is balanced. The
graph peaks on both sides but sinks in the middle for images with a large
difference in contrast and low amounts of mid-level brightness.
Using the Histogram
Setting the Exposure (EV Compensation) 1p.76
Displaying Shooting Information 1p.78
Reviewing Shooting Information 1p.92
Number of pixels→
←Brightness→(Dark) (Bright)
Dark image Correct image Bright image