DETERMINING YOUR RESOLUTION
Proper control of the resolution obtains satisfactory detail of scanned images. Resolution is measured by dots per inch (dpi). Normally, the higher the resolution the larger the image file size will be, but at higher quality.
Greater resolution requires more time, memory and disk space. There is a limit beyond which the resolution will not produce much visual improvement, but will make your files more unmanageable.
Resolution: Left = 50 dpi | Right = 100 dpi |
An A4 size color image scanned at 300 dpi at True Color mode consumes approximately 25 MB of disk space. A higher resolution is recommended only for a small area at True Color mode.
The following table offers a suggestion to help you choose an appropriate resolution.
IMAGE TYPE | RESOLUTION (DPI) |
Line Art | 200 |
Color Picture | 100 |
OCR* | 300 |
*OCR: Stands for Optical Character Recognition, the process to convert an image to a text format.
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