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ESOLUTION

Resolution determines how many pixels, or dots,

are used for scanning and reproducing an image.

As the resolution value increases, the scanner

reads and reproduces the image in finer detail.

You might hear resolution described in terms of

dots per inch (dpi), or pixels per inch (ppi).

The best resolution setting really depends on the

type of image you are scanning and the printing

method. The table below shows optimum

scanning resolutions for most needs.

Output Device

Line Art

Black and white 300-400 75

printer

Electronic color 300-400 150-200

printer

Printing press/ 400-800 150-200 150-200

imagesetter

Remember that the higher the resolution, the

larger the resulting image file. An 8 l/2 x 11-inch

color photo scanned at 300 dpi requires 25MB!

Larger files use up your computer and hard disk

memory; they take longer to process, to print, or

to transmit by modem; and they are more difficult

to save to a disk for sending to a service bureau or

printing company. Selecting the lowest possible

resolution that gives acceptable quality keeps file

sizes manageable.

Gray Scale Color

150-200