Canon PIXMA MX392 Manual - Page 150

Resolution

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Resolution The data in the image you have scanned is a collection of dots carrying information about brightness and color. The density of these dots is called "resolution", and resolution will determine the amount of detail your image contains. The unit of resolution is dots per inch (dpi). Dpi is the number of dots per inch (2.5 cm). The higher the resolution (value), the more detail in your image; the lower the resolution (value), the less detail. How to Set the Resolution You can set the resolution in the following screens. • IJ Scan Utility Resolution on the (Scanning from a Computer) tab of the Settings dialog box • ScanGear (Scanner Driver) Output Resolution in Output Settings on the Advanced Mode tab Appropriate Resolution Settings Set the resolution according to the use of the scanned image. Item Type Use Color photo Black and white photo Text document (document or magazine) Copying (Printing) Creating a postcard Saving to a computer Using on a website or attaching to e-mail Saving to a computer Using on a website or attaching to e-mail Copying Attaching to e-mail Scanning text using OCR Color Mode Color Appropriate Resolution 300 dpi Color Color Color 300 dpi 300 dpi 150 dpi Grayscale Grayscale 300 dpi 150 dpi Color, Grayscale, or Black and White Color, Grayscale, or Black and White Color or Grayscale 300 dpi 150 dpi 300 dpi Important If you double the resolution, the data size of the scanned image quadruples. If the file is too large, the processing speed will slow down significantly, and you will experience inconvenience such as lack of memory. Set the minimum required resolution according to the use of the image. Note

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Resolution
The data in the image you have scanned is a collection of dots carrying information about brightness and
color. The density of these dots is called "resolution", and resolution will determine the amount of detail
your image contains. The unit of resolution is dots per inch (dpi). Dpi is the number of dots per inch (2.5
cm).
The higher the resolution (value), the more detail in your image; the lower the resolution (value), the less
detail.
How to Set the Resolution
You can set the resolution in the following screens.
•
IJ Scan Utility
Resolution
on the
(Scanning from a Computer) tab of the Settings dialog box
•
ScanGear (Scanner Driver)
Output Resolution
in
Output Settings
on the
Advanced Mode
tab
Appropriate Resolution Settings
Set the resolution according to the use of the scanned image.
Item Type
Use
Color Mode
Appropriate
Resolution
Color photo
Copying
(Printing)
Color
300 dpi
Creating a postcard
Color
300 dpi
Saving to a computer
Color
300 dpi
Using on a website or
attaching to e-mail
Color
150 dpi
Black and white photo
Saving to a computer
Grayscale
300 dpi
Using on a website or
attaching to e-mail
Grayscale
150 dpi
Text document
(document or magazine)
Copying
Color, Grayscale, or
Black and White
300 dpi
Attaching to e-mail
Color, Grayscale, or
Black and White
150 dpi
Scanning text using OCR
Color or Grayscale
300 dpi
Important
If you double the resolution, the data size of the scanned image quadruples. If the file is too large, the
processing speed will slow down significantly, and you will experience inconvenience such as lack of
memory. Set the minimum required resolution according to the use of the image.
Note