Canon N670U, N1240U, N676U Precautions for Scanning at High Resolutions, Resolution Guidelines

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Precautions for Scanning at High Resolutions

Please note that file sizes increase almost exponentially as the resolution is raised when scanning in color mode. Scanning at high resolutions may require more time for scanning and image processing. You are recommended to avoid raising the resolution beyond the minimum requirement to scan in color mode.

File Size Estimates for Scanning an A4 Size Original in Color

-

75 dpi

1.6 MB

-

100 dpi

2.8 MB

-

150 dpi

6.3 MB

-

300 dpi

25.5 MB

-

600 dpi

102 MB

-

1200 dpi

408 MB

A4 color image

 

 

 

 

 

408 MB

 

 

 

 

102 MB

 

 

 

 

25.5 MB

 

 

1.6 MB

2.8 MB

6.3 MB

 

 

 

 

 

 

 

75 dpi

100 dpi

150 dpi

300 dpi

600 dpi

1200 dpi

* These numbers are approximate and may differ from actual scan results.

Resolution Guidelines

For uploading to a web site or viewing on a computer monitor, choose 75 dpi

For scanning print photos and magazine clippings, choose 150 - 300 dpi

For printing on a inkjet printer, choose a resolution approximately half the printer’s rating (180 dpi, 360 dpi, 600 dpi or 720 dpi)

A resolution higher than 600 dpi is effective in case for scanning relatively small originals that will be blown up to larger sizes for printing.

6"(15cm)

4"(10cm)

12"(30cm)

Scanning at double of the resolution

Scanning at half

 

of the resolution

3"(7.5cm)

2"(5cm)

8"(20cm)

The maximum file sizes scanned by the bundled PhotoStudio and PhotoBase are limited by Windows Me and Windows 98 to 256 MB. Windows 2000 Professional does not impose these limits.

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Contents Product Guide Page Table of Contents Handling and Care of the Scanner Safety Precautions About the Power SupplyAbout Locations General Handling Precautions Setup and Operating Conditions Looking straight down on the scannerBefore Transporting the Scanner Care and Maintenance Guide to the Software Guide to the SoftwareSimple Mode Advanced ModeScanGear CS-U Windows ScanGear CS-U FeaturesStarting ScanGear CS-U MacintoshStarting ScanGear Toolbox How to Use ScanGear ToolboxScanGear Toolbox ScanGear Toolbox ToolbarImage quality How to Use the Funtions Example Copy PrintImage type Paper sizeWindows ArcSoft PhotoStudioStarting PhotoStudio and the Driver Software MacintoshArcSoft PhotoBase Starting ArcSoft PhotoBase and the Driver SoftwareScanSoft OmniPage Starting OmniPage and the Driver SoftwarePrecautions for Scanning at High Resolutions Resolution GuidelinesCustomer Support Help Desk Canon U.S.A., INC