Operation Manual

Displaying Offline Referenced Images
When a master is offline or cannot be found, Aperture draws the thumbnail image first,
and then the preview if it is present. Because the preview is high quality, you can zoom
and even use the Loupe.
Suppressing Preview Generation When Opening Aperture
When Aperture opens, it begins updating previews for those projects whose Maintain
Previews For Project setting is turned on. (For more information about maintaining
previews, see Controlling Previews with the Library Action Pop-Up Menu.) This can cause
problems if a project contains damaged files or images in unsupported file formats. In
Aperture, you can suppress preview generation when opening Aperture, allowing you
to more easily identify the damaged image files. To do this, press the Shift key while
opening Aperture. You can also cancel the current preview maintenance operation using
the Activity window.
Note: If you have canceled a preview maintenance operation, the previews are not
updated until another change is made to the image. To force Aperture to update the
preview for an image, see Controlling Previews with Shortcut Menus. The next time you
open Aperture, automatic preview maintenance resumes.
248 Chapter 6 Displaying Images in the Viewer