UMAX Astra 2100U Owner’s Guide
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The table below gives you an idea of the file sizes you can expect
based on the original image size and the resolution setting you
specify. These values are based on scanning images in 24-bit, True
Color RGB mode. Image sizes shown below are given in
megabytes.
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 36-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
36-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.
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