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Understanding Adobe Photoshop CS4: The Essential Techniques for Imaging Professionals by Richard Harrington

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Chapter 4. Sizing Digital Images

Once you’ve acquired your digital images, you’ll need to size them for your project (as well as ultimate output). For many Photoshop users, such as photographers, this may be as straightforward as cropping and sizing. This chapter explores several techniques for sizing your images. You’ll learn about the concept of resampling, which addresses how the computer adds or subtracts information from a digital image while trying to retain detail and clarity.

Resolution Revisited

Chapter 3 looked closely at the process of acquiring digital images. If you skipped ahead or just skimmed that chapter, go back—a solid understanding of those concepts is required. Quite simply, you must know the capabilities of your scanner or ...

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