Canon 650D - Manual (Page 268)

268
B : Shooting Information Display
About the Highlight Alert
When the shooting information is displayed, any overexposed areas of the
image will blink. To obtain more image detail in the overexposed areas, set
the exposure compensation to a negative amount and shoot again.
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 [x2: 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. 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. 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. 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. 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, as well as white balance inclination.
Sample Histograms
Dark image
Normal brightness
Bright image
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