User Guide

ACDSee Pro 2.5 - User Guide
102
Curves options
Channel Specifies the color channels to adjust.
Show
Histogram
Toggles the histogram display on and off.
Histogram Displays a graphic of the color information levels in the image, based on the
selected channel. Click and drag the line to manipulate the curve. Each time
you click the curve, a new node is added. You can drag the nodes up and down
the curve.
Reset Discards all changes and reverts to the original image.
Exposure
warning
Highlights over- and under-exposed areas of the image. Over-exposed pixels
turn red, under-exposed pixels turn green.
Adjusting image color
Using the Histogram
The Histogram displays a graphical representation of the distribution of intensity levels of pixels
for each color channel in an image.
To display and use the Histogram:
1. In the Viewer, click View, and then select Histogram.
2. On the Histogram, select or clear the following check boxes:
x R: shows or hides the red color channel.
x G: shows or hides the green color channel.
x B: shows or hides the blue color channel.
x L: shows or hides the lightness of the image.
Applying Auto Color
You can use the Auto Color tool to automatically adjust an image's colors.
To automatically adjust image colors:
1. In Edit Mode, on the Edit Panel, click Color.
2. Select the Auto Color tab.
3. Drag the slider to adjust the amount of color correction you want to apply.
4. Do one of the following:
x Click Done to apply your changes and close the Auto Color tool.
x Click Cancel to discard all changes and close the tool.