Sony DSLR-A900 User Guide

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Using the 
vi
ewing function
93
A histogram is the luminance distribution that shows how many pixels of a 
particular brightness exist in the picture.
To return to the normal playback screen
Press the 
 button again.
How to check the histogram
Displaying the histogram
Press the 
 button.
The histogram and recording data of the 
displayed image are displayed.
 button
When the image has a bright or dark area 
portion, that portion is flashed on the 
histogram display (Luminance limit 
warning).
Luminance
B (Blue)
R (Red)
G (Green)
Flashing