Apple Aperture 3.5 - Manual (Page 307)

Chapter 7 Make image adjustments 307
Adjust a custom color value in an image
If you require a specific hue as a starting point for your color adjustment, you can use the Color
eyedropper to identify a hue in the image.
1 Select a photo.
2 In the Color area of the Adjustments inspector or the Adjustments pane of the Inspector
HUD, click the color with the hue closest to the one you plan to adjust, and select the Color
eyedropper tool.
Click the Color eyedropper
and select the color in the
photo you want to adjust.
The pointer changes to an eyedropper, and the Loupe appears, showing a magnified view of
the target area. By default, the Loupe is set to magnify the image to 100 percent (full size). If
necessary, you can increase the magnification of the Loupe by choosing a magnification level
from the Loupe pop-up menu. For more information, see
Loupe overview on page 181.
3 Position the eyedropper over the color in the image that you want to adjust, and click.
The new hue is selected and becomes the starting point for color adjustments of that hue.
67% resize factor