After creating and setting the library properties, you are ready to import media. The import process utilizes the same unified window whether you are importing source media files from a supported camera or from an attached volume.
When importing from a supported camera, card reader, or folder of a device’s files, choose File > Import. Doing so provides the benefits of simultaneously viewing all video and image files of the camera or device, joining spanned clips, and allowing you to select only portions of a clip for import.
Importing spanned clips works when all the source media cards or source media camera archives are mounted at once. See the Final Cut Pro Help file for more information.