Adobe photoshop cs2 User Manual
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ADOBE PHOTOSHOP CS2
User Guide
Keyboard shortcuts for Curves
The following shortcuts work with the Curves dialog box:
•
Ctrl-click (Windows) or Command-click (Mac OS) in the image to set a point on the curve in the current channel
specified in the Curves dialog box.
specified in the Curves dialog box.
•
Shift+Ctrl-click (Windows) or Shift+Command-click (Mac OS) in the image to set a point on the curve for the
selected color in each color component channel (but not in the composite channel).
selected color in each color component channel (but not in the composite channel).
•
Shift-click points on the curve to select multiple points. Selected points are filled with black.
•
Click in the grid, or press Ctrl-D (Windows) or Command-D (Mac OS) to deselect all points on the curve.
•
Press arrow keys to move selected points on the curve.
•
Press Ctrl+Tab (Windows) or Control+Tab (Mac OS) to move forward through control points on the curve.
•
Press Shift+Ctrl+Tab (Windows) or Shift+Control+Tab (Mac OS) to move backward through control points on
the curve.
the curve.
To add contrast to a photo
You can add contrast to an image in two ways, depending on the problem.
If the image needs overall contrast because it doesn’t use the full tonal range, choose Image > Adjustments > Levels.
Then drag the Shadow and Highlight input sliders inward until they touch the ends of the histogram.
Then drag the Shadow and Highlight input sliders inward until they touch the ends of the histogram.
A
B
Image pixels don’t extend to the ends of the graph, indicating that the image is not using the full tonal range.
A. Shadow Input slider B. Highlight Input slider
A. Shadow Input slider B. Highlight Input slider
If the image uses the full tonal range, but needs midtone contrast, choose Image > Adjustments > Curves. Drag the
curve into an S shape.
curve into an S shape.
Increasing the slope in the middle of the curve increases contrast in the midtones.
See also