Lightroom Previews Created During Import

As Lightroom reads the pixel data from image files, previews are created, which are then also referenced by the catalog. In the Import screen you can specify the previews generated during import at the following sizes and quality levels (see Figure 2-9):

File Handling y

Render Preview ^ Minimal

Don't Import 5u5

File Handling y

Don't Import 5u5

Figure 2-9

Minimal: Select this option to have your import complete in the fastest time possible. Only small thumbnails will be generated during the import. When you begin working with your images later, Lightroom will generate larger previews as necessary on-the-fly, which may cause slight delays in the response of the program as previews are built.

b. Embedded and Sidecar: Select this option to have Lightroom read any existing previews contained in the original files and use the current previews if they are up-to-date, or generate new ones if not. This is particularly intended for raw and dng files. (I never use this option, because I only want to see Lightroom's most current previews.)

c. Standard: Select this option to have Lightroom generate thumbnails and standard-sized previews during Import. Standard previews are used to show photos full-screen. You can set the size and quality used for standard previews in Catalog Settings^File Handling.

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