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30 VISIONEER STROBE XP 450 SCANNER INSTALLATION GUIDE
■ 8-Bit Gray—scans the image using up to 256 true shades of gray.
Use this setting to scan black and white photographs and other
higher quality black and white images. You can also scan a color
photo with this setting to turn its colors into gray shades. The file
size is about one third the size of a color scan.
■ 24-Bit Color—scans the image in full color. Use this setting to
scan color photographs and other color images. The file size is the
largest of the image type options.
■ Enhanced bit-depths—If you are using an imaging application
other than PaperPort, the image type drop-down list will include
16-Bit Grayscale and 48-Bit Color. These image types are only
available if the imaging application supports them. You will
receive an error message if the application does not support the
selected enhanced bit-depth.
RESOLUTION
Resolution determines the amount of detail you can see in the scanned
image. The resolution setting for a scan is in dots-per-inch (dpi). The
higher the resolution, the finer the details, however, higher dpi settings
also take longer to scan and produce larger files sizes. Usually the higher
resolution settings are used for precision work, such as photographs or
fine artwork.
■ Click the Resolution drop-down list and select a resolution.
The resolution settings on your Strobe XP 450 scanner range from
100 dpi to 2400 dpi.
BRIGHTNESS AND CONTRAST
Sometimes an item is scanned with the brightness and contrast set too
light or too dark. For example, a note written with a light pencil may
need to be scanned darker to improve legibility.
Note: You can see the file size at the bottom of the Scan Manager.