Optimizing your Scan

Scanner types fall into categories defined by the material they are designed to digitize and the level of quality they can produce. It is also vital to understand the difference between the actual optical resolution capabilities of a scanner and the amount of information it can literally see, as opposed to the virtual or advertised resolution of the scanner, or the amount of information it can fake through interpolation. Once again, always use a scanner's optical resolution as your standard. Avoid interpolation unless you have no other choice.

Note: Adobe Photoshop's interpolation technology has improved to the point where minor upsampling can be done without noticeably degrading your image. On the other hand, if you decide that major increases of the file size of your image are necessary consider using special applications that are designed for this purpose. See Appendix T for Photoshop-related applications.

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