Apple Aperture 2 - Manual (Page 184)

184 Part II Photo Editing
Comparing Images
You can select an image against which to compare other images in your project or the
library. The selected image remains on the screen as you select and display other images
to compare against it. The comparison feature is useful for making final selections of the
best images in a series or comparing two versions of an image for correct exposure or
highlights. When comparing images, you can apply ratings and keywords and make
adjustments to selected images.
Comparing images involves setting a “compare” image and then viewing other images
against the compare image.
To set the compare image:
1 Select an image.
2 Do one of the following:
 Choose View > Main Viewer > Compare (or press Option-O).
 Choose Compare from the Viewer Mode pop-up menu in the tool strip.
To view an image against a compare image, do one of the following:
m Select a second image.
m Navigate through the images in the Browser with the Up Arrow, Down Arrow, Left Arrow,
and Right Arrow keys.
The compare image is
displayed with a green
border, visible in the
Viewer and Browser.
The image you want
to examine against the
compare image is shown
to the right.