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Essential extras.(Home Computing)(Peripherals)(Cover Story)(Buyers Guide)

Consumer Reports

| September 01, 2001 | COPYRIGHT 2001 Consumers Union of the United States, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

Now that digital photography, home-video editing, gaming, and desktop publishing are becoming commonplace, adding a scanner or a larger monitor to your computer setup lets you take full advantage of those applications.

Here are the key points to keep in mind when buying a scanner or monitor, based on the results of our recent tests.

SCANNERS

IMPORTANT NUMBERS

Price and resolution. Scanners fall into two categories. Models priced at about $100 offer a resolution--the level of detail they can actually scan--of 600 dots per inch (dpi). Models priced at about $200 offer 1,200-dpi resolution. Most people don't need the higher resolution. Scanning photos generally requires 300 dpi. Only if you regularly work with high-quality graphics might you want a 1,200-dpi scanner.

Color depth. Most scanners offer what's known as 36-bit color depth, a measure of the number of colors the scanner is able to recognize. A 36-bit color depth provides more colors than the human eye can distinguish. So there's no point to paying more for 42-bit color depth. Besides, a scanner's software usually reduces the color output to a still-ample 24-bit depth.

KEY FEATURES

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