Canon EOS 5D Mark III Instruction Manual (en)

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254
B: Shooting Information Display
 
About the Histogram
The brightness histogram shows the exposure level distribution and 
overall brightness. The RGB histogram is for checking the color 
saturation and gradation. The display can be switched with [33: 
Histogram disp
].
[Brightness] Display
This histogram is a graph showing the 
distribution of the image’s brightness level. The 
horizontal axis indicates the brightness level 
(darker on the left and brighter on the right), 
while the vertical axis indicates how many 
pixels exist for each brightness level. The more 
pixels there are toward the left, the darker the 
image. And the more pixels there are toward the 
right, the brighter the image. If there are too 
many pixels on the left, the shadow detail will be 
lost. And if there are too many pixels on the 
right, the highlight detail will be lost. The 
gradation in-between will be reproduced. By checking the image and 
its brightness histogram, you can see the exposure level inclination 
and the overall gradation.
[RGB] Display
This histogram is a graph showing the distribution of each primary 
color’s brightness level in the image (RGB or red, green, and blue). 
The horizontal axis indicates the color’s brightness level (darker on 
the left and brighter on the right), while the vertical axis indicates 
how many pixels exist for each color brightness level. The more 
pixels there are toward the left, the darker and less prominent the 
color. And the more pixels there are toward the right, the brighter 
and denser the color. If there are too many pixels on the left, the 
respective color information will be lacking. And if there are too 
many pixels on the right, the color will be too saturated with no 
gradation. By checking the image’s RGB histogram, you can see the 
color’s saturation and gradation condition and white balance 
inclination.
Sample Histograms
Dark image
Normal brightness
Bright image