Canon imageCLASS MF249dw Manuel

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Adjusting Balance between File Size and Image Quality
1469-055
  You can specify the file compression ratio when converting scanned documents into
the JPEG format. <Small: Memory Priority> makes the compression ratio higher than
normal to create smaller files with lower image quality. On the other hand, <Large:
Image Quality Priority> makes the compression ratio lower than normal larger files
with higher image quality.
<Scan>   Specify a destination with <E-Mail>/<File>   <Data Size>   Specify the setting
<Small: Memory Priority>
The data size is highly compressed and reduced, but the image quality becomes low.
<Standard>
The compression ratio and the image quality are adjusted to an intermediate setting between <Small:
Memory Priority> and <Large: Image Quality Priority>.
<Large: Image Quality Priority>
The image quality improves, but the data compression ratio decreased and data size becomes large.
LINKS
Using the Machine as a Scanner
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