Canon PowerShot SX70 HS Digital Camera - Manual (Page 233)

z Playback Display Options
z Overexposed highlights blink over the information display image when
you access screens showing detailed information.
z A graph called a brightness histogram on the top of screens with
detailed information shows the distribution of brightness in images. The
horizontal axis represents the degree of brightness, and the vertical
axis, how much of the image is at each level of brightness. Viewing this
histogram enables you to check exposure.
Switching Histograms
z When switched to the RGB display option, an RGB histogram showing
the red, green, and blue distribution in images appears on screens
with detailed information. The horizontal axis represents R, G, or B
brightness, and the vertical axis, how much of the image is at that level
of brightness. Viewing this histogram enables you to check image color
characteristics.
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