User manual

17 • Highlight and shadow (tonal range)
ColorQuartet 5.0 Pro
161
Changing tonal range with the histogram
The histogram in the Highlight/Shadow window is a bar graph that shows the distribution of
light and dark tones in the cropped image area.
• The right-hand end of the histogram represents the lightest tones in the image, and the left-
hand end represents the darkest tones.
• The higher the bar, the more tones of that lightness value are present in the image.
• By dragging the histogram horizontally, you can change the distribution of tonal values, and
thus make the image lighter or darker. Dragging to the right makes the image lighter. Dragging
to the left makes it darker.
• The small red triangle at the top edge of the histogram shows the lightness value of the last
point you clicked on in the feedback windo
w. You can use this as a guideline when you stretch the his-
togram. For example, click on the white field in the Densitometer to find the lightest point in the
image, or click on the point you want to be lightest. Then drag the histogram, observing the location of
the small red triangle.
• You can also use the arrow keys on your computer keyboard to drag the histogram.
>>> Related topics:
H
ighlight and shadow • Overview
Cancelling color tool changes
Saving and retrieving color tool settings
• The “right” and “left” arrows affect the highlight setting (right-hand end).
• The “up” and “down” arrows affect the shadow setting (left-hand end).