Apple Aperture 2 - Manual (Page 529)

Chapter 19 Using the Light Table 529
IV
To manually align images:
1 In the Light Table, select the images you want to align, making sure that the image or
group of images you want to align with remain unselected.
2 Drag the selected image or group of images.
As you drag the selected image or group of images, yellow guidelines appear as a
visual cue to help you align the selected images with the unselected ones. When you
quit dragging, the yellow guidelines disappear.
You can also have Aperture automatically arrange the images in the Light Table.
To automatically arrange images in the Light Table:
m In the Light Table, Control-click beside the images, then choose Arrange All Items from
the shortcut menu.
If some images in a group are hidden behind other images, you can also reveal, or
uncover, all images in the group.