Apple Aperture User Manual
Page 196
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If you have a second display and want to view each image on a different display,
choose View > Secondary Viewer > Span (or press Option-S).
3
Rate your compare image by doing one of the following:
 To assign the Select rating: Press Option-backslash (\).
 To increase the compare image’s rating: Press Option–equal sign (=).
 To decrease the compare image’s rating: Press Option-hyphen (-).
 To assign the Reject rating: Press Option-9.
The rating appears as an overlay on the compare image.
4
Rate the alternate image by doing one of the following:
 To assign the Select rating: Press Command-5 or backslash (\).
 To increase the image’s rating: Press Command–equal sign (=).
 To decrease the image’s rating: Press Command-hyphen (-).
 To assign the Reject rating: Press Command-9.
The rating appears as an overlay on the alternate image.
5
Navigate to the next alternate by pressing the Left or Right Arrow key, or click the
Previous Image or Next Image button in the control bar.
If you discover that the new selection is a better choice or has the best rating, you can
make it the compare image by pressing Return or choosing Edit > Set Compare Item.
You can then review and compare your alternates against this image to confirm it as
the best image.
∏
Tip: To quickly make a selected item the compare image, press Return. To turn off the
comparison feature, press Command-Return.
The new alternate
appears in the Browser
with a white border.