Using The Viewfinder - Canon PowerShot A530 Advanced User's Manual

Histogram Function
The histogram is a graph that allows you to judge the brightness
of the image. The greater the bias toward the left in the graph, the
darker the image. The greater the bias toward the right, the
brighter the image.
If the image is too dark, adjust the exposure compensation to a
positive value. Similarly, adjust the exposure compensation to a
negative value if the image is too bright (p. 54).
Sample Histograms
Dark Image

Using the Viewfinder

The viewfinder can be used to conserve power by turning the LCD
monitor off (p. 15) while shooting.
Viewfinder
Balanced Image
Shows the center of the image
Bright Image
19