Canon CanoScan FB 1200S User Guide - Page 53

How the Output Resolution and Image Size Relate, output resolutions.

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Scanning How the Output Resolution and Image Size Relate To understand the relationship between the two settings, see the example below of an image scanned in the file mode at different output resolutions. Example with the Output Resolution Changed to 600 Input Resolution (dpi) 300 600 Output Resolution (dpi) 300 300 Image Size (pixels) 300 x 200 300 x 300 Image Size (cm) 2.54 x 1.69 1.27 x 0.84 File Size (KB) 180 180 * These numbers are approximate and may differ from actual results. Example with the Output Resolution Changed from 300 to 600 dpi. An output resolution of 600 dpi signifies that one linear inch of an image output to a printer or to a monitor will contain 600 dots (= pixels). Since the image was scanned at a density of 300 dots per inch and is being output at twice that density, the image size is cut in half. You are, in effect, placing more of the image in less space. Input Resolution of 300 dpi Output Resolution of 300 dpi The size does not change between input and output Scanned at 300 dots per inch Input Resolution of 300 dpi Output at 300 dots per inch Output Resolution of 600 dpi The output image is 1/2 the size of the input image 300 dots per inch Scanned at 300 dots per inch Output at 600 dots per inch Keep this relationship in mind when you need to pay attention to the size of the output image. 53 FilmGet FAU User's Guide

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53
FilmGet FAU User’s Guide
Scanning
Example with the
Output Resolution
Changed to 600
600
300
300 x 300
1.27 x 0.84
180
How the Output Resolution and Image Size Relate
To understand the relationship between the two settings, see the
example below of an image scanned in the file mode at different
output resolutions.
* These numbers are approximate and may differ from actual results.
Example with the Output Resolution Changed from 300 to 600 dpi.
An output resolution of 600 dpi signifies that one linear inch of an
image output to a printer or to a monitor will contain 600 dots (=
pixels). Since the image was scanned at a density of 300 dots per
inch and is being output at twice that density, the image size is cut
in half. You are, in effect, placing more of the image in less space.
Keep this relationship in mind when you need to pay attention to
the size of the output image.
Input Resolution (dpi)
300
Output Resolution (dpi)
300
Image Size (pixels)
300 x 200
Image Size (cm)
2.54 x 1.69
File Size (KB)
180
Input Resolution of
300 dpi
Scanned at 300 dots per inch
Output Resolution of
300 dpi
Output at 300 dots per inch
The size does not
change between
input and output
Input Resolution of
300 dpi
Scanned at 300 dots per inch
Output Resolution of
600 dpi
Output at 600 dots per inch
The output image
is 1/2 the size of
the input image
300 dots per inch