Canon PIXMA MG7720 User Manual - Page 663
How to Set the Resolution, Appropriate Resolution Settings
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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 Resolution on the dialog. (Scanning from a Computer) tab of the Settings Appropriate Resolution Settings Set the resolution according to the use of the scanned image. Item Type Use Color Mode Copying (Printing) Color Color photo Creating a postcard Saving to a computer Color Color Using on a website or attaching to e-mail Color Black and white photo Saving to a computer Grayscale Using on a website or attaching to e-mail Grayscale Copying Text document (document or magazine) Attaching to e-mail Color, Grayscale, or Black and White Color, Grayscale, or Black and White Scanning text using OCR Color or Grayscale Appropriate Resolution 300 dpi 300 dpi 300 dpi 150 dpi 300 dpi 150 dpi 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 • When you will be printing the scanned image by enlarging it, scan by setting a higher resolution than the recommended one above. 663