Advanced Scanning

Note:

Only the black curve can be adjusted for grayscale images.

 

The anchor turns white, retaining its

 

current setting. Click it again to

 

reactivate it (it will turn to black).

Numeric Values

Type a numeric value (+ or –) to

 

adjust the curve. Each field adjusts

 

an anchor point on the curve.

Sliders

Adjust the sliding controls below the

 

curve. See How To Use the Tone

 

Curve Sliders for information on

 

adjusting the image with these

 

sliders.

Apply Tone Curves To Individual Colors

With color images, there are four basic color channels that make up the full spectrum of color: red, green, blue, and black. All gradation tone curve adjustments can be made to the overall image, or to individual color channels.

When you first access the Gradation Curves dialog box for a color image, all of the color channels are active.

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