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Only choose 'Group 4' or 'Group 3(-1D)' when you are sure you can use
Note:
these compressions afterwards. Choose 'None' in any other case.
If you scan grayscales or dark originals, then use Group 3(-1D)
Note:
compression. In these cases group 4 can increase the file size.
'Group 4' or 'Group 3(-1D)' are compression methods which are
Note:
optimized for text and vector drawings. If you choose these compressions when
scanning a photo with many grayscales, these compressions can result in a
negative compression: the file size increases instead of decreases. So use these
compressions with care.
PDF compress
Within the 'PDF compress' option, you can define the 'Compression' of the
file.
Compression
Group 4
None
Only choose 'Group 4' when you are sure you can use this compression
Note:
afterwards. Choose 'None' in any other case.
Resolution
The scan-to-file option allows you to scan at the following three resolutions:
200 dots per inch (dpi)
300 dpi
400 dpi
The higher the resolution the better the image quality. Higher resolution also
leads to larger file sizes. The default value is 200 dpi.
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