6-2
iVina 1200U
6.1.1 DETERMINING OPTICAL RESOLUTION
A good control of the resolution results in a satisfactory detail of an image scanned. The resolution is
measured by dot per inch(dpi). Normally, the greater the dpi value, the higher the resolution and the bigger the
image file size. Be aware that the greater resolution takes more time, memory and disk space; therefore, up to
a certain degree of dpi, the resolution will not be visually improved. And on the contrary, it makes your files
more unmanageable.
Resolution: 50 dpi
Resolution: 100 dpi
Figure 6-3 Resolution Control
Tips:
1. For your information, an A4 size color image scanned at 300 dpi at True Color mode consumes
approximately 25 MB of disk space. A higher resolution (usually means over 600 dpi) is recommended only
when you need to scan a small area at True Color mode.
2. You can also refer to the following table to choose a proper resolution while applying your image to other
application.
Scanner Settings
Application
Image Type
Resolution
(dpi)
File, Fax, E-mail Your Document
LineArt
200
View, Copy, Edit Your Color Picture
True Color
100
OCR* Your Document
LineArt
300
*OCR: Stands for Optical Character Recognition, the process to convert an image to a text format.
