Apple Aperture 3.5 - Manual (Page 340)

Chapter 7 Make image adjustments 340
Use the pointer to sample the color values in an image
1 In the Adjustments inspector or the Adjustments pane of the Inspector HUD, choose Show
Camera/Color Info from the Adjustment Action pop-up menu .
2 Place the pointer over the area of the image where you want to sample the color values,
and view the values at the top of the Adjustments inspector or the Adjustments pane of the
Inspector HUD.
Color meter
Use the Loupe to sample color values in an image
1 Click the Loupe button in the toolbar, or press the Grave Accent (`) key.
2 Choose View > Loupe Options > Show Color Value in Loupe, or press Option-Shift-Tilde (~).
3 Place the target area of the Loupe over the area of the image where you want to sample the
color values.
The color values appear in the magnified area of the Loupe.
67% resize factor