Canon Pixma Mp540 User Guide

							Even if Descreen is set to ON, some moire effects may remain if Unsharp Mask is set to ON. In
that case, set Unsharp Mask to OFF.
Selecting Magazine(Color) in Select Source in Basic Mode has the same effect as setting
Descreen to ON in Advanced Mode.
Reduce Dust and Scratches
Scanned photos may contain white dots caused by dust or scratches. Use this function to reduce such
noise. This setting is None by default.
None
Dust and scratches will not be reduced.
Low
Select this to reduce small dust particles and scratches. Large ones may remain.
Medium
It is recommended that you normally select this setting.
High
Select this to reduce small/large dust particles and scratches. Evidence of the reduction process
may remain and may also remove delicate parts of the image.
Important
This function may not be effective for some types of photos.
Note
It is recommended that you select None when scanning printed materials.
Fading Correction
Use this function to correct photos that have faded with time or have a colorcast. Colorcast is a
phenomenon where a specific color affects the entire picture due to the weather or ambient strong
colors. This setting is None by default.
None
Fading correction will not be applied.
Low
Select this to correct a small amount of fading and colorcast.
Medium
It is recommended that you normally select this setting.
High
Select this to correct a large amount of fading and colorcast. This can affect the tone of the image.
Important
You can set Fading Correction after preview.
Fading Correction may not be effective if the scan area is too small.
You can set this setting when Recommended is selected on the Color Settings tab of the
Preferences dialog box.
When you click Multi-Crop, this setting turns to None and you cannot change it.
Grain Correction
Use this function to reduce graininess (roughness) in photos taken with high-speed or sensitized film.
This setting is None by default.
None
Graininess will not be reduced.
Low
Select this when the photo is slightly grainy.
Medium
It is recommended that you normally select this setting.
High
Select this when the photo is very grainy. This can affect the gradation and sharpness of the
Page 551 of 758 pages Image Settings
 
						

							image.
Important
Grain Correction may not be effective if the scan area is too small.
Backlight Correction
Use this function to correct photos that have been shot against light.
When you change the Backlight Correction setting, the result will be reflected in the preview image.
None
Backlight correction will not be applied.
Low
Select this to correct slightly backlit photos. This will not affect the image contrast.
Medium
It is recommended that you normally select this setting.
High
Select this to correct strongly backlit photos. This can affect the image contrast.
Important
You can set Backlight Correction after preview.
You can set this setting when Recommended is selected on the Color Settings tab of the
Preferences dialog box.
Backlight Correction may not be effective if the scan area is too small.
When you click Multi-Crop, you cannot change this setting.
Note
Noise patterns may appear when Backlight Correction is applied. Applying Grain Correction and
setting Unsharp Mask to OFF may reduce the noise patterns.
Gutter Shadow Correction
Use this function to correct shadows that appear between pages when scanning open booklets.
When you set the Gutter Shadow Correction setting in the preveiw image, the result will be reflected.
Preview the effects before scanning, as results vary depending on the type of document and how it is
pressed.
Unclear or blurred text/lines caused by curved pages are not corrected.
None
Gutter shadow will not be corrected.
Low
Select this when the effect level is too strong with the medium setting.
Medium
It is recommended that you normally select this setting.
High
Select this when the effect level is too weak with the medium setting.
Important
Do not place items that weigh 4.4 lbs (2.0 kg) or more on the Platen. Also, do not press on the
document with a force exceeding 4.4 lbs (2.0 kg). If you press heavily, the scanner may not work
correctly or you might break the glass.
When you click Multi-Crop, this setting is not available. Click Reset then change the setting.
Align the document with the edge of the Platen. If not, the shadow will not be corrected properly.
Page 552 of 758 pages Image Settings
 
						

							Shadows may not be corrected properly depending on the document. If the page background is
not white, shadows may not be detected correctly or may not be detected at all.
While scanning, press down on the spine with the same amount of pressure you used to preview
the scan. If the binding part is not even, the shadow will not be corrected properly.
How to place the document depends on your model and the document to be scanned.
Note
Cover the document with black cloth if white spots, streaks, or colored patterns appear in scan
results due to ambient light entering between the document and the Platen.
If the shadow is not corrected properly, adjust the cropping frame on the preview image.
Adjusting Cropping Frames
Page top
Page 553 of 758 pages Image Settings
 
						

							Advanced Guide > Scanning > Scanning with Other Application Software > ScanGear (Scanner Driver) Screens > Color
Adjustment Buttons
Color Adjustment Buttons
The Color Adjustment Buttons allow you to make fine corrections to the image brightness and color
tones. You can adjust the images overall brightness or contrast, and adjust its highlight and shadow
values (histogram) or balance (tone curve).
Important
The Color Adjustment Buttons are not available when you apply Multi-Crop or when you select Color
Matching on the Color Settings tab of the Preferences dialog box.
Selectable settings depend on color mode settings.
Note
When you adjust the image via the Color Adjustment Buttons, the results will be reflected in the
preview image.
Click a Color Adjustment Button to set the following items:
 (Saturation/Color Balance)
Adjust the vividness and color tone of the image. Use this function to brighten colors that have faded
with time or due to colorcast. Colorcast is a phenomenon where a specific color affects the entire
picture due to the weather or ambient strong colors.
Adjusting Saturation and Color Balance
 (Brightness/Contrast)
Adjust the brightness and contrast of the image. If the image is too dark or too bright, or if the image
quality is flat due to lack of contrast, you can adjust the levels of brightness and contrast.
Adjusting Brightness and Contrast
 (Histogram)
A histogram allows you to see the data concentration at each brightness level of an image. You can
specify the darkest level (shadow) and brightest level (highlight) within an image, cut the levels and
expand the middle of the tonal range of the image.
Adjusting Histogram
 (Tone Curve Settings)
Page 554 of 758 pages Color Adjustment Buttons
 
						

							Adjust the brightness of an image by selecting the type of graph (tone curve) showing the balance of
tone input and output. You can make fine adjustments to the brightness of a specific area.
Adjusting Tone Curve
 (Final Review)
Make a final check of color adjustments. The final synthesized tone curve and the histogram derived
from the subsequent image processing will be displayed. There are no settings to make in this
screen.
For a color image, select a color in Channel to check either Red, Green or Blue, or select Master to
check three colors together.
If you place the cursor on the preview image, the portion will be enlarged and its RGB values (only
K when Color Mode is Grayscale) before and after the adjustments will be displayed.
 (Threshold)
Set the boundary (threshold) at which black and white are divided. By adjusting the threshold level, you
can sharpen text in a document or reduce show-through in newspapers.
Setting Threshold
Custom
You can name and save a set of tone curve and threshold settings created with the Color Adjustment
Buttons.
Select Add/Delete... from the pull-down menu. When Color Mode is set to anything but Black and
White, the Add/Delete Tone Curve Settings dialog box opens. When Color Mode is Black and White,
the Add/Delete Threshold Settings dialog box opens.
Enter Setting Name and click Add. The name appears in Tone Curve Settings List or Threshold
Settings List.
Click Save to save.
You can load and apply the saved tone curve/threshold settings to a preview image. To load the
settings, select the saved item from the pull-down menu.
To delete an item, select it in Tone Curve Settings List or Threshold Settings List and click Delete.
Note
Page 555 of 758 pages Color Adjustment Buttons
 
						

							Save up to 20 items.
Defaults
Reset all adjustments (saturation/color balance, brightness/contrast, histogram and tone curve).
Page top
Page 556 of 758 pages Color Adjustment Buttons
 
						

							Advanced Guide > Scanning > Scanning with Other Application Software > ScanGear (Scanner Driver) Screens > AutoScan Mode Tab
Auto Scan Mode Tab
This mode allows you to scan easily by simply placing documents on the Platen and clicking a button.
In Auto Scan Mode, documents are automatically detected. You do not need to specify cropping frames
or make image corrections.
Supported Documents
Photos, Hagaki, business cards, magazines, newspapers, text documents and CD/DVD.
Important
The following types of documents cannot be scanned correctly.
In that case, specify the document type on the Basic Mode tab or the Advanced Mode tab and
scan again.
- Documents other than photos, Hagaki, business cards, magazines, newspapers, text
documents and CD/DVD
- Text documents smaller than 2L (5 inches x 7 inches) (127 mm x 178 mm), such as paperback
pages with the spine cut off
- Documents printed on thin white paper
- Wide documents such as panoramic photos
Scanning in Basic Mode
Scanning in Advanced Mode
Reflective CD/DVD labels may not be scanned properly.
Place documents correctly according to the type of document to be scanned. Otherwise,
documents may not be scanned correctly.
See Placing Documents for details on how to place documents.
Scan from the Basic Mode Tab or Advanced Mode Tab to reduce moire.
How to set documents 
Placing Documents appears.
View scanned images
Select this checkbox to display the thumbnails of scanned images in a different window.
Page 557 of 758 pages Auto Scan Mode Tab
 
						

							Scan
Scanning starts.
Note
When scanning starts, the progress will be displayed. Click Cancel to cancel the scan.
When scanning is completed, a dialog box prompting you to select the next action may open.
Follow the prompt to complete. For details, see Status of ScanGear dialog after scanning in 
Scan Tab (Preferences dialog box).
Instructions 
This page appears.
Preferences...
The Preferences dialog box opens and you can make scan/preview settings.
Preferences Dialog Box
Close
Close ScanGear (scanner driver).
Related Topic
Scanning in Auto Scan Mode
Page top
Page 558 of 758 pages Auto Scan Mode Tab
 
						

							Advanced Guide > Scanning > Scanning with Other Application Software > ScanGear (Scanner Driver) Screens >
Preferences Dialog Box
Preferences Dialog Box
Click Specify... in the ScanGear (scanner driver) screen to open Preferences dialog box.
In the Preferences dialog box, you can make advanced settings to ScanGear (scanner driver) functions
via the Scanner, Preview, Scan and Color Settings tabs.
Scanner Tab
Allows you to specify a folder to save images temporarily and a music file to play during or at the end of a
scan.
Scanner Tab
Preview Tab
Allows you to select what to do with Preview when ScanGear (scanner driver) is started and how to
display cropping frames after previewing images.
Preview Tab
Scan Tab
Allows you to select what to do with ScanGear (scanner driver) after scanning images.
Scan Tab
Color Settings Tab
Allows you to select how to adjust color, enable/disable Auto Tone, and specify the monitor gamma
value.
Color Settings Tab
Page top
Page 559 of 758 pages Preferences Dialog Box
 
						

							Advanced Guide > Scanning > Scanning with Other Application Software > ScanGear (Scanner Driver) Screens >
Scanner Tab
Scanner Tab
On the Scanner tab, you can specify the following settings.
Quiet Mode
Select this checkbox to reduce scanner sound by slowing down the scanner head when previewing or
scanning documents. This checkbox is not selected by default.
Note
Scanning takes longer than usual when you enable this function.
Select Folder Where Temporary Files are Saved
Displays the folder in which to save images temporarily. To change the folder, click Browse... to specify
another one.
Sound Settings
You can set the machine to play music during/at the end of a scan.
Select the Play Music During Scanning or Play Sound When Scanning is Completed checkbox, then
click Browse... and specify a sound file.
You can specify the following files.
MIDI file (*.mid, *.rmi, *.midi)
Audio file (*.wav, *.aif, *.aiff)
MP3 file (*.mp3)
Calibration Settings
When you set Execute at Every Scan to ON, the scanner will be calibrated every time before previewing
and scanning, to reproduce correct color tones in scanned images.
Note
Even when Execute at Every Scan is set to OFF, the scanner may be calibrated automatically in
some cases (such as immediately after you turn the machine on).
Calibration may take time depending on your computer.
Page top
Page 560 of 758 pages Scanner Tab