Operation Manual

To choose a color value option for the Color meter
µ
In the Adjustments inspector or the Adjustments pane of the Inspector HUD, choose a
color value option from the Adjustment Action pop-up menu (with a gear icon).
Choose a color value
option here.
Choosing a Color Value Sample Size
You can also set the sample size (pixel area) Aperture uses to determine color values.
458 Chapter 16 An Overview of Image Adjustments