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Resolution
The resolution determines how detailed a scan is. The resolution is
normally defined as the number of dots scanned per inch. The units of
resolution are dots per inch. You can also think of it as the density of
pixels in the image.
The greater the resolution, the greater the image detail you can scan.
However, the more detail you have, the greater the amount of data a
scan produces. For example, doubling the resolution in both the
horizontal and vertical directions results in four times the amount of
data.
Each output device also has its own specific resolution. If you scan an
image at the same resolution as your output device, the final image
will be the same size as the original. Likewise, if you scan an image at
double the resolution of your output device, the final image will be
twice the size of the original.
Note:
Some software may adjust images that include resolution information
so they appear as their actual size.
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