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Applying Pictures to the Desktop > Apply Images to Your Desktop - Pg. 249

Customizing Your Mac OS X Desktop with Digital Media 249 · In iPhoto, select the images you want to export, click the Share button, and then click the Export button. Use the resulting dialog to set a resolution for the images you are exporting and choose a save location. (See Chapter 3 for the details.) · In iMovie, view the frame that you want to export as an image and choose File, Save Frame As. In the resulting dialog, choose a format ( JPEG is usually the best choice), name the file, choose a location, and save the frame. · If you have an NVidia-equipped Mac and a copy of Snapz Pro X, play a DVD in full-screen mode and take a screenshot. Preparing Desktop Pictures After you have captured the image you want to use, there isn't much preparation that you need to do to it before you can use it as a desktop image. About the only factor of significance is the resolution of the image in comparison to the desktop resolution that you are using. If you use a small image, such as 640 × 480, on a large desktop, such as 1280 × 1024, Mac OS X has to rescale the image quite a lot to make it fill the screen. Dramatic changes in size like this can reduce the quality of the image significantly. For best results, the image you use as a desktop picture should be equal to or slightly larger than the desktop resolution in which you most commonly work. TIP When you export images from your iPhoto Library, you can choose the size at which the images are exported. When exporting images for your desktop, choose your desktop's res- olution as the size at which the images are exported. Similarly, the orientation and proportions of the image that you use should be similar to your desktop. Since the desktop is in the landscape format, landscape images work best. You can use a portrait-