Canon scanner CanoScan FS4000US User Manual

							Adjusting the Scan Settings
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Adding and Deleting Menu Items
You can customize the scan settings pull-down menu to make it easier to use. For example, you can 
add items, change the item order and delete items.
This following example explains these procedures using the “Display Size” option of the display 
mode.
The preset items cannot be deleted from the pull-down menu.
Clicking the [Copy...] button copies the selected item under the same name with “copy” added to the end.
You cannot add or delete items to or from a pull-down menu that does not have an [Add/Delete...] item.
Click this to accept the settings 
and close the dialog box. Select 
[Add/Delete...].
Click this to cancel the settings 
and close the dialog box.
Click this to add a new item.
Click this to rename an item. Click this to copy the selected 
item. A check mark will 
appear beside each 
item that is displayed in 
the pull-down menu. 
Removing the check 
mark removes the item 
from the pull-down 
menu.
Click this to insert a divider above the 
selected item.
Click this to delete the selected item. Click one of these to raise or 
lower the selected item in the 
list. 
						

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Adding a New Item
Clicking the [New...]
 button will display the following dialog box. Input the new name, set the setting 
and click [OK]
.
You cannot set the same name as an existing item.
You can add up to 64 new items.
Renaming an Item
Clicking the [Rename...]
 button will display the following dialog box. Input the new name to the 
“Name” box and click [OK]
 to rename the item.
You cannot set the same name as an existing item.
Input the new name. Set the setting value to be added.
[New...]
Input the new name.
[Rename...] 
						

							CanoScan FS4000US Film Scanner
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CHAPTER 4
Adjusting Images
This section explains how to adjust the brightness and coloring of preview 
images.
Image Adjustment Modes ..............................................72
Adjusting a Histogram ...................................................77
Adjusting the Tone Curve ..............................................79
Adjusting the Brightness/Contrast ...............................81
Adjusting the Color Balance .........................................83
Adjusting the Threshold Value......................................84 
						

							Adjusting Images
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Image Adjustment Modes
You can use the image adjustments to correct a preview image if the image quality is not quite to your 
satisfaction.
You cannot use the image adjustment modes when the “Use Color Matching” option is on. See p. 89, “Use 
Color Matching,” for an explanation of switching the Use Color Matching option.
The image adjustment section is grayed out and adjustments cannot be made when there is no image 
displayed in the preview area.
You can make image adjustments individually for each frame which has a preview image.
Guide to the Image Adjustment Section
Preview images are scanned as a collection of dots into FilmGet FS. Each dot is assigned brightness and color 
values. You can correct the image by applying various adjustments to this data.
Channel Selection Panel
Adjustment Mode Tabs
Adjustment Settings Area
This is where the actual settings for each 
image adjustment mode are set and 
displayed. Refer to the topics for each mode 
for an explanation of the settings.
RGB Values Display
[Save...] button
Reset Button inside Tab[Clear] (Reset All Tabs) button[Load...] button 
						

							Adjusting Images
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Adjustment Mode Types
The available adjustment modes vary as shown below with the color mode that has been selected. 
You can switch between adjustment modes by clicking on the respective tabs.
Color Mode (42-Bit and 24-Bit Color)
Grayscale Mode (14-Bit and 8-Bit Grayscale)
Black and White Mode
Brightness/Contrast. See p. 81.
Tone Curve. See p. 79.
Histogram. See p. 77. Ta b
Color Balance. See p. 83.
Brightness/Contrast. See p. 81.
Tone Curve. See p. 79.
Histogram. See p. 77.
Threshold Value. See p. 84. 
						

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Procedures Common to All Image Adjustment Modes
This topic introduces the procedures that are common to all image adjustment modes.
Channel Selection Panel
The color of each dot comprising the scanned image is expressed as a mixture of varying gradations 
of red (R), green (G) and blue (B). The settings for each of these colors, which are referred to as 
channels, can be adjusted individually or together via the master channel.
Channels are only displayed with the histogram and tone curve modes. Moreover, the red, green and 
blue channels are all grayed out and cannot be selected when the color mode has been set to either 
of the grayscale modes.
Sliders and Input Boxes
You can adjust or set a setting by dragging the slider tab left or right. The value in the input box will 
change accordingly. You may also input a value directly into the box. In this case the slider will 
change accordingly.
Master Channel
Adjusts or sets all three colors at once.
Red Channel
Adjusts or sets only the red elements of the image.
Green Channel
Adjusts or sets only the green elements of the image.
Blue Channel
Adjusts or sets only the blue elements of the image.
Slider Tab Input Box 
						

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Reset and [Clear] Buttons
There are two reset buttons: one inside each tab and one at the bottom of the dialog.
Reset Button inside Tab
Click this button to reset all the settings in the particular tab to the default values. If the tab has 
channel settings, this button only resets the default values for the selected channel.
[Clear]
 (Reset All Tabs) button at Bottom
Click this button to reset all the settings for all the adjustment modes to the default values.
[Save...] button
You can save settings in a file for future reuse if you are going to rescan the same image. The files are 
saved with the following extensions depending upon the color mode. If you are using a Macintosh, 
the extension (“.adc”, etc.) is not used. 
[Load...] button
Click this button to load a settings file that has been saved using the [Save...]
 button.
RGB Values Display
This display shows the color (RGB) values for the area of the preview image under 
the mouse cursor. The values are displayed in the “XXX/YYY” format, where “XXX” 
represents the original color values and “YYY” represents the adjusted color 
values. 42-Bit and 24-Bit Color
[filename.adc]
14-Bit and 8-Bit Grayscale
[filename.adg]
Black and White
[filename.adb]
Reset Button inside Tab
[Clear] (Reset All Tabs) button at Bottom 
						

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How to Use Each Image Adjustment Mode
Refer to the chart below for an idea of how to use each image adjustment mode. See the page 
number referenced for each mode for more information on that particular mode. 
						

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Adjusting a Histogram
The histogram adjustment mode is available when the color mode is set to [42-Bit Color]
, [24-Bit 
Color]
, [14-Bit Grayscale]
 or [8-Bit Grayscale]
. The histogram shows just how much data falls into 
each brightness level. Use this mode when you wish to specify the appropriate allocation of data 
between the brightest values (highlights) and the darkest values (shadows). You can specify cutoff 
values for highlights or shadows to create a better distribution of the halftones.
Guide to the Histogram Tab
Individual Channels
Click here to adjust each RGB channel separately (not available for grayscale images).
Master Channel
Click here to adjust all three RGB channels at 
once.
Shadow Slider Tab
Drag the slider tab left or right to adjust the 
shadow cutoff level. The cutoff level can be set 
to any value from 0 to 254. All data to the left of 
the shadow cutoff is changed to a value of 0 
(black).
Highlight Slider Tab
Drag the slider tab left or right to adjust the 
highlight cutoff level. The cutoff level can be 
set to any value from 1 to 255. All data to the 
right of the highlight cutoff is changed to a 
value of 255 (white).
Highlight Value Input Box
Input a value from 1 to 255 and press the 
[Tab] key to set the 
highlight cutoff level. You can also use the   arrow keys to 
adjust the value.
White Point Eyedropper Tool
Click this tool to change the cursor to an eyedropper, then click on the 
preview image to change the data at the clicked point to 255 (white).
Black Point Eyedropper Tool
Click this tool to change the cursor to an eyedropper, then click on the preview 
image to change the data at the clicked point to 0 (black).
Reset Button
Click this button to reset the histogram for the selected channel to its default values.Shadow Value Input Box
Input a value from 0 to 254 and press the 
[Tab] key to set the shadow cutoff level. You can also use 
the   arrow keys to adjust the value. 
						

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Interpreting a Histogram
You can select the entire image or specify an area for which a histogram will be generated. The 
relative heights of the peaks in the histogram indicate the concentration of data with the 
corresponding brightness values.
How to Adjust a Histogram
The distribution of data between highlights and shadows can be adjusted by dragging the shadows 
and highlights slider tabs left or right. All data to the left of the shadows cutoff will change to 0 (black) 
and all data to the right of the highlights cutoff will change to 255 (white). The examples below show 
adjustments to improve the contrast.
Click the   selector tool in the preview area to deselect the black or white point eyedropper tool.
Bright Portion
Dark Portion
Entire ImageDistribution of data with a bias 
toward highlights
Distribution of data with a bias 
toward shadows
Distribution of data well 
distributed between shadows 
and highlights
Shadow (0) Highlight (255)
Image 1
Image with a bias toward 
highlight
Move both the shadows and 
highlights slider tabs inward.Image 3
Image with well distributed 
data
Move the highlights slider tab 
toward the shadows end. Move the shadows slider tab 
toward the highlights end.Image 2
Image with a bias toward 
shadows