Canon EOS-1D Mark IV User Manual

Page 158

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H Image Playback

Sample Histograms

Dark image

• About the AF Point Display

When the

[E‘ AF point disp.]

menu option is set to

[Enable],

the AF

point which achieved focus will be displayed in red. If automatic AF

point selection was used, multiple AF points might be displayed in red.

• 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

[E‘ 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.

158

Normal brightness

Bright image