Viewing photos full size is necessary for evaluating how sharp the focus is, and other technical aspects. Preview brings up photos in a scaled-down size as the default, and hitting command-0 for every picture to see it full-size is a pain. Is there a way to make Preview shows pics full-size as the default? Or is there a better viewer for quickly clicking through the photos in a folder and seeing them full-size instead of scaled to fit the screen?