TAILIEUCHUNG - How to Do Everything With Your Scanner- P31

How to Do Everything With Your Scanner- P31: My thanks to the terrifically creative and knowledgeable staff at Osborne, particularly acquisitions editor Megg Bonar and acquisitions coordinator Alissa Larson for their responsiveness and flexibility. Special thanks to technical editor Steve Bain, not only for his insight and attentiveness to accuracy, but also for actively coming up with many ideas for content. | 134 How to Do Everything with Your Scanner GIF image format---- JPEG image format__ FIGURE 8-3 Extensions for some common image formats Selecting an Image Format You don t have to specify a format when you save a file. The image-editing program will automatically do it for you. Image-editing programs such as PhotoSuite PhotoDeluxe Paint Shop Pro and Photoshop save files to their own native format as a default. If you don t specify a format when saving a file the program you re using will save the file in its proprietary format. Using only the proprietary format will work fine for you if you want to edit save and print files using the same application as many people do. You also need to be reasonably sure that anyone you send your images to can open them in the proprietary format. Also some file formats allow you to save special effects such as layers of text or graphics over a photo that other formats do not. Although you can accomplish many tasks using only the default proprietary format you can sacrifice efficiency by staying in a file-saving rut. You achieve versatility and make life easier by choosing the appropriate format for the task at hand. For example if you re sending a file over the Internet you most likely want to opt for a format that economizes time and space by compressing data. If you re giving an image disk to a CHAPTER 8 Formats for Saving and Storing Files 135 friend who doesn t have a copy of PhotoDeluxe he or she won t be able to open the image if you ve saved it in the default proprietary format PSD for PhotoDeluxe. This section familiarizes you with some of the most commonly available and useful image formats. It also gives you a few pointers on how to select the one that best meets your needs. JPEG The Most Common Internet Format The main advantage of the JPEG format is that it provides you with the ability to eliminate image information to reduce file size. This process is called compression. The advantage here is that smaller files .

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