When you finish adjusting the photograph using the Camera Raw interface, click OK in the Camera Raw dialog box to open the image in Photoshop. A copy of the original camera raw file opens. (Remember that one benefit of using Camera Raw is that the digital negative never gets touched.) This file is not saved until you press Ctrl+S/z +S or choose File>Save.
Depending upon your use for the photograph, you can save the image in several file formats, including Photoshop’s native PSD, TIF, JPEG, or as a Photoshop PDF.