Canon CS-S 4.3 User Manual
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Chapter 5
Scanning Techniques
File Size Estimates
ScanGear CS-S displays an estimated file size for your scan in the status area
on the lower left of the ScanGear CS-S window. The following table provides
some estimates for the same 6 inches x 4 inches color photograph scanned at
typical modes, resolutions, and output sizes.
Scan Mode
Scan Resolution (dpi)
Output Size
File Size
Color (24 bit)
Screen/Web 75 dpi
6" x 4"
396 KB
Fax 200 dpi
6" x 4"
2.75 MB
BJ-Printer 360 dpi
6" x 4"
8.90 MB
Laser 300 dpi
6" x 4"
24.7 MB
1200 dpi
6" x 4"
98.9 MB
Color (36 bit)
Screen/Web 75 dpi
6" x 4"
791 KB
Fax 200 dpi
6" x 4"
5.49 MB
BJ-Printer 360 dpi
6" x 4"
17.8 MB
Laser 300 dpi
6" x 4"
49.4 MB
1200 dpi
6" x 4"
198 MB
Grayscale (8 bit)
Screen/Web 75 dpi
6" x 4"
132 KB
Fax 200 dpi
6" x 4"
938 KB
BJ-Printer 360 dpi
6" x 4"
2.97 MB
OCR 300 dpi
6" x 4"
2.96 MB
Laser 300 dpi
6" x 4"
8.24 MB
1200 dpi
6" x 4"
33.0 MB
Grayscale (12 bit)
Screen/Web 75 dpi
6" x 4"
264 KB
Fax 200 dpi
6" x 4"
1.83 MB
BJ-Printer 360 dpi
6" x 4"
5.93 MB
OCR 300 dpi
6" x 4"
4.12 MB
Laser 300 dpi
6" x 4"
16.5 MB
1200 dpi
6" x 4"
65.9 MB
Black and White/
Text Enhanced
Screen/Web 75 dpi
6" x 4"
16.5 KB
Fax 200 dpi
6" x 4"
117 KB
BJ-Printer 360
6" x 4"
380 KB
OCR 300 dpi
6" x 4"
264 KB
Laser 300 dpi
6" x 4"
1.05 MB
1200 dpi
6" x 4"
4.12 MB
The color mode, resolution, and size also affect the length of time it takes to
scan an image. If you are scanning at a high resolution in Color mode, the
scan may take a lot longer than if you are scanning at lower resolutions, or in
Black and White or Grayscale.