Microtek 35t plus User Guide

Resolution determines the level of detail recorded by the scanner, and is measured in
dots per inch (dpi). The greater the dpi number, the higher the resolution and the result-
ing file size. Image quality improves with higher resolution, but only up to a certain
point, after which increasing the resolution simply makes file size unmanageable without
yielding any visible improvement to the image. For most purposes, scans up to 300 dpi
are adequate.

Resolution is also related to scaling, or how large or small the image will be scanned
relative to the original. When you change the resolution, the scaling may be affected
slightly if the resolution you selected has no exact equivalent in scaling. (Scaling is
discussed in the next section, Image Dimension controls.)

To set your resolution:

Enter a resolution setting in the Resolution edit box. There is no need to press the Enter
key; typing in a value automatically inputs it into the system. If the value you enter is too
low or too high, the minimum or maximum resolution value is entered for you instead.

When dealing with resolution, it's important to distinguish between optical, or true,
resolution, and interpolated resolution, which is resolution enhanced through software.

•      Optical resolution is the key factor in determining the sharpness and clarity of an

image.

•      Interpolated resolution, or resolution enhanced through software, is useful for

certain tasks, such as scanning line art or enlarging small originals.