Canon scanner CanoScan FS4000US User Manual

Adjusting Images
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FilmGet FS User’s Guide
Adjusting the Tone Curve
The tone curve adjustment mode is available when the color mode is set to [42-Bit Color]
, [24-Bit 
Color]
, [14-Bit Grayscale]
 or [8-Bit Grayscale]
. Use this mode to adjust the brightness of the image 
by changing the relative input and output values on the tone curve, which is a graphical 
representation of the highlights and shadows. This mode is especially useful for making fine 
adjustments to the brightness of specific...

Adjusting Images
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FilmGet FS User’s Guide
Interpreting Tone Curves
Adjusting a Tone Curve
The images below demonstrate how to adjust the brightness of an image by changing the tone 
curve. In FilmGet FS, the input is the data scanned by the 
scanner and the output is the data displayed on the 
monitor. The tone curve shows the balance between the 
highlights and shadows in the input and output.
.
Unadjusted Tone Curve
Make the curve as smooth 
as possible to provide a 
natural appearance....

Adjusting Images
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FilmGet FS User’s Guide
Adjusting the Brightness/Contrast
The brightness/contrast adjustment mode is available when the color mode is set to [42-Bit Color]
, 
[24-Bit Color]
, [14-Bit Grayscale]
 or [8-Bit Grayscale]
. Use this mode to adjust the overall 
brightness or contrast (difference between highlights and shadows) of an image. This mode is 
particularly useful when the original image is too bright or too dark, or the contrast is too flat.
Guide to the...

Adjusting Images
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Adjusting the Brightness
Adjusting the brightness is effective when the entire image is too bright or dark. You must be careful, 
however, not to create excessive highlights or shadows by setting the value to extreme levels.
Adjusting the Contrast
Contrast is the degree of difference between light and dark areas of the image. Raising the contrast 
accentuates the difference between light and dark. Lowering it reduces the difference between the 
two....

Adjusting Images
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FilmGet FS User’s Guide
Adjusting the Color Balance
The color balance adjustment mode is available when the color mode is set to [42-Bit Color]
 or 
[24-Bit Color]
. Use this mode to adjust the balance between the three colors: red (R), green (G) and 
blue (B). This mode is especially useful when a particular color is too strong or weak.
Guide to the Color Balance Tab
RGB is the acronym for the three primary colors: red, green and blue. These colors can be mixed in...

Adjusting Images
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FilmGet FS User’s Guide
Adjusting the Threshold Value
The threshold value adjustment mode is available when the color mode is set to [Black and White]
. 
In contrast to color and grayscale images, which are expressed with brightness settings ranging 
from 0 to 255, all the halftones in black and white images are expressed as either black (0) or white 
(255). The point at which a particular dot is assigned a black or white value is called the threshold 
value. The default...

CanoScan FS4000US Film Scanner
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FilmGet FS User’s Guide
CHAPTER 5
Other Functions
This section explains the items on the pull-down menus accessed from the 
FilmGet FS menu bar.
[Settings] Menu ..............................................................86
[Device] and [Help] Menus ............................................96 

Other Functions
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[Settings] Menu
Adjusting the Exposure
When FilmGet FS is first installed, the “Auto Gain” option is set to on (checked) by default. This is the 
setting you are recommended to use in most cases. With this setting the exposure (amount of light 
passing through the film) and coloring (negative film only) are set automatically by the scanner.
However, if a film is not producing well with this setting, you can turn off the Auto Gain option and 
adjust the...

Other Functions
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The scanning process involves passing light through the film and reading the resulting data. You can adjust an 
image’s brightness by controlling the amount of light, which may also be called the exposure. The exposure is 
controlled by speeding up or slowing down the rate of the scan.
Changes to the exposure value are reflected immediately to the preview image. An overexposed 
image appears very bright, while an underexposed image appears very dark....

Other Functions
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Clean Dust/Scratches processing is not performed during the thumbnail scan.
Clean Dust/Scratches processing is performed when the color mode is set to [24-Bit Color] or [42-Bit Color].
When the film type is set to monochrome, all items are grayed out and unavailable.
When using the Clean Dust/Scratches function, the [On (Standard)] setting is recommended for normal cases.  
If you desire a higher level of image correction, the [On (Strong)] setting...