Operation Manual

An Overview of the Curves Adjustment Controls
Before applying a Curves adjustment, it’s a good idea to get acquainted with the Curves
adjustment controls.
Add Point button
Black Point, Gray Point,
and White Point
eyedropper buttons
Channel pop-up menu
Range pop-up menu
In and Out fields
Auto Curves Separate
button
Auto Curves Combined
button
• Channel pop-up menu: Choose a color channel to apply a tonal curve to from this
pop-up menu. You can also apply the tonal curve to all color channels combined, as
well as show separate color channel overlays when tonal curve adjustments are applied
to individual color channels.
• Auto Curves Combined button: Click this button to apply a tonal curve adjustment when
you want to correct contrast based on total luminance, without affecting the color cast
of the image.
• Auto Curves Separate button: Click this button to apply a tonal curve adjustment when
you want to correct contrast as well as remove color casts in the image.
• Black Point eyedropper tool: Use this eyedropper to set the black point in the image.
• Gray Point eyedropper tool: Use this eyedropper to set the gray point in the image.
• White Point eyedropper tool: Use this eyedropper to set the white point in the image.
• Add Point button: Click this button to use the Loupe to sample pixels in the image and
then add a point to the tonal curve for each color channel as well as the RGB tonal
curve.
• In and Out fields: Enter the In and Out point values for a selected point on the tonal
curve. The In point represents the horizontal axis (x-axis), and the Out point represents
the vertical axis (y-axis).
539Chapter 17 Making Image Adjustments