Apple Aperture 2 - Manual (Page 368)

368 Part III Performing Image Adjustments
To automatically correct the exposure of a RAW image:
1 Select an image.
2 In either the Adjustments inspector or the Adjustments pane of the Inspector HUD, click
the Auto Exposure button.
The exposure of the image is automatically corrected. If you need to fine-tune the
image’s exposure setting, see “
Working with the Exposure Controls ” on page 412.
You can always reset the image to its original exposure.
To reset the exposure of an image:
m Choose Edit > Undo Auto Exposure (or press Command-Z).
Click the Auto Exposure
button to automatically
set the exposure for
the image.