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34 VISIONEER 6200/6400 SCANNER INSTALLATION GUIDE
Enable hardware compression (JPEG)—Click to make the JPEG
compression options active.
Minimize Image Size (Maximum compression)—Select this
option to produce the smallest file size for the image; image quality
is lowest.
Best Image Quality—Select this option to produce the best quality
image; file size is larger.
Custom Quality Factor—Set your own choice for file size and
image quality. Enter a number in the Quality Factor box or drag the
slider to set the Quality Factor. High means higher image quality
and larger file size. Low means lower image quality but smaller file
size.
Restore Defaults—Click to return the slider and Custom Quality
Factor to their original settings
7. Click OK.
The Configuration dialog box reappears. Make sure the
configuration you just defined is selected.
8. Click OK on the Configuration dialog box.
The new configuration and its adjusted settings now apply to the
button whose tab is selected at the top of the Configuration dialog
box.
ABOUT JPEG COMPRESSION
Scanned graphics, photos, and other images can sometimes produce
large files. The JPEG options for scanning reduce the file size by
compressing the image electronically. But compression also reduces
image quality. Therefore, compressing an image involves a trade-off
between image quality and file size. In many cases, loss of quality due to
compression is not readily apparent, but the amount of compression
you select—if any—depends on the quality you want.