Exploring the Library module
Grid view options
As new photos are imported, low-resolution previews will appear in the Grid view. If you selected the “Standard-Sized Previews” option at the import stage, the initial rendering may take a little longer but it will force-build better-quality screen previews. If the camera used to capture the images has the camera orientation information embedded in the metadata, the thumbnail previews should correctly rotate to portrait or landscape mode accordingly. Otherwise, you can use the rotate buttons to rotate the images manually or use 
to rotate left and to rotate right (Mac), or use and (PC).
To open ...
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