N650U/N656U/N1220U Getting Started
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English
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 a Letter Size Original in Color
- 100 dpi
3 MB
- 300 dpi
26 MB
- 600 dpi
105 MB
- 1200 dpi 418 MB
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, 720 dpi)
A resolution of 1200 dpi is effective for scanning relatively small originals that will
be blown up to larger sizes for printing (i.e. blowing up a 3.5 x 5 in. image to letter
size).
The maximum size of a file scanned by the bundled PhotoStudio 2000 and
PhotoBase programs is limited by Windows 98 to 256 MB. Windows 2000
Professional does not impose these limits. At 1200 dpi in color mode, this file
size corresponds to an original that is approximately 20 x 18 cm (7.87 x 7. 08
in.). Application programs such as Adobe Photoshop are required to scan
larger originals at 1200 dpi in Windows 98.