User manual

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2-29
Introduction
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Document
Troubleshooting
Appendix
Table of Contents
Index
● Histogram
This dialog box enables you to see the data concentration at
each brightness level in an image. You can specify the darkest
and brightest levels within an image, cut the levels and expand
the middle of the tonal range of the image.
[Channel] Select a color to adjust either [Red], [Green],
or [Blue], or select [Master] to adjust all three
colors together when [Color] or [Color
(Documents)] is selected in [Color Mode].
Adjust the elements of grayscale when
[Grayscale] is selected in [Color Mode].
(Black-point eyedropper tool)
Click this button, then click a point in the
preview image (or inside the focal crop) to
specify the darkest point. You can also enter
a value (0 to 245) or move the slider to
an appropriate level.
(Mid-point eyedropper tool)
Click this button, then click a point in the
preview image (or inside the focal crop) to
specify the midtone point. You can also enter
a value (5 to 250) or move the slider to
an appropriate level.
(White-point eyedropper tool)
Click this button, then click a point in the
preview image (or inside the focal crop) to
specify the highlighted point. You can also
enter a value (10 to 255) or move the slider
to an appropriate level.