Apple Aperture 2 - Manual (Page 221)

Chapter 8 Stacking Images and Making Picks 221
II
Creating Stacks
When you import your images, you can specify that Aperture create stacks automatically.
For example, if you shoot a series of images in quick succession (such as at a sports event)
or if you bracket images to allow for differences in lighting or exposure, you most likely
will want to view those images together. Aperture can stack those images based on
metadata recorded by the camera as the series of pictures is taken.
 Image series: With a series of images shot in quick succession, Aperture can determine
the images in a sequence and group them in a single stack. For example, sports
photographers shoot rapid bursts of images to capture actions. Based on timeline
metadata—when a series of shots was taken and the interval between shots—
Aperture can determine which images fall into a sequence and group them in stacks.
 Bracketed shots: These typically represent a series of three pictures with slightly
different exposure settings. Advanced digital cameras often have options for shooting
bracketed shots automatically. When Aperture detects a series of bracketed images, it
includes the neutral image and the over- and underexposed images in the stack.
This shows an example of
a series of images taken
in quick succession.