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Table 1. Resolution/File
--
Size Guidelines
Resolution
(dots per inch)
Image Size
4x5
Image Size
5x7
Image Size
8.5x11
72
0.30
0.53
1.39
100
0.58
1.00
2.68
200
2.29
4.01
10.70
300
5.15
9.01
24.10
400
9.16
16.00
42.80
600
20.60
36.10
96.30
800
36.60
64.10
171.20
1200
82.40
144.20
385.20
NOTE
: Choosing the True Color RGB 42-bit setting captures more data than
the 24-bit setting. This means that the file sizes listed above will be larger if
you scanned images using the True Color 42-bit RGB setting.
Choosing the Best Resolution for Your Scanning
Project
To choose the best resolution for scanning, determine what you are going to do
with the image once it is scanned. Matching your scanning resolution to the
image use will give you the best image for that purpose and will keep the file
sizes to the minimum needed.
Table 2. Recommended Resolutions
Image Use
Recommended Resolution
Printing
300 - 600*
Viewing on the Screen
72
Viewing on the Web
72
OCR, B/W
300
Pre-Press
600
Enlarging or reducing
600
* Depending on the resolution of your printer
