Canon DS126251 ユーザーズマニュアル

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 Image Playback
 
About the Histogram
The brightness histogram display shows the exposure level 
distribution and overall brightness. The RGB histogram display is for 
checking the color saturation and gradation. The display can be 
switched with the [4 Histogram] menu option.
[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 detail. 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
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