Apple Aperture 3.5 - Manual (Page 264)

Chapter 7 Make image adjustments 264
Remove a vignette
You use the Devignette adjustment controls to correct a vignette that was applied to an image
as it was shot. The term vignette describes an image whose brightness fades at the edges.
Vignettes are usually caused by poor lens design, stacked filters, lens hoods, and wide-angle
zoom lenses. Aperture corrects the image by increasing the brightness at the edges of the image
where vignettes typically occur.
Note: When you apply a Devignette and a Crop adjustment to the same image, Aperture applies
the Devignette adjustment first to correct lens artifacts. Applying the Devignette adjustment
before the crop prevents any distortion that would otherwise appear in the cropped image.
Before Devignette adjustment After Devignette adjustment
Remove the vignette from your image
1 Select a photo.
2 If the Devignette controls aren’t shown in the Adjustments inspector or the Adjustments pane of
the Inspector HUD, choose Devignette from the Add Adjustment pop-up menu, and specify the
following settings:
•
To set the amount of brightness applied to the edges of the image: Use the Intensity
parameter controls.
Use the Intensity slider and
value slider to adjust the
amount of brightness applied
to the edges of the photo.
•
To adjust the distance Aperture goes from the edge of the image, in pixels, to apply the Devignette
adjustment: Use the Radius parameter controls.
Use the Radius slider and value
slider to adjust the size of the
area over which the Devignette
adjustment is applied.
For information about applying a vignette to an image, see Apply a vignette to an image on
page 313.
You can also brush the Devignette adjustment on specific areas of an image. For more
information, see
Apply brushed adjustments on page 228.
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