Apple MB673Z/A User Manual - Page 197
Controlling Preview Images
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II Controlling Preview Images You can control the creation and maintenance of preview images for an entire library, as well as on a project-by-project or image-by-image basis. Aperture is preset to create previews for images in the library. Previews are built as a background activity after importing images. If you import a large number of images, it may take an extended time to build these previews. In that case, you may wish to temporarily stop the building of previews using the Activity window and then resume building the previews later. Or, you can deselect the "Create previews for existing images" checkbox and build previews on a project-by-project basis, as discussed in "Sample Workflows for Using Previews Effectively" on page 202. Setting Preview Preferences Aperture provides four preference settings for controlling previews. These settings apply to all libraries. To open Aperture preferences: m Choose Aperture > Preferences, then click Previews. The Previews pane appears. Â New projects automatically generate previews: Selecting this checkbox tells Aperture to automatically build and maintain previews for new projects you create in the current library (and, by extension, in new libraries). This checkbox sets the Maintain Previews for Project setting (discussed below) for each new project as it is created. Â Use embedded JPEG from camera when possible: Selecting this checkbox tells Aperture to use the JPEG thumbnail produced by the camera, if available. Â Share previews with iLife and iWork: Selecting this checkbox tells Aperture to create a file, in XML format, that the iLife and iWork media browsers (and Mac OS X screen saver) use to access the Aperture library. If this checkbox is deselected, Aperture will not create this file for any of your libraries, and the media browsers and the screen saver cannot see your Aperture libraries. The XML file is updated whenever Aperture quits or is no longer the active application. For very large libraries, the XML file can take some time to update. In this case, if you are not sharing your previews with other applications (other than through dragging and dropping), you may decide to deselect this checkbox. Chapter 6 Displaying Images in the Viewer 197
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