Canon Pixma Mx492 User Guide

							Output Settings
Output Settings allows you to set the following items:
Output Resolution Select the resolution to scan at.
The higher the resolution (value), the more detail in your image. Select a resolution from the options displayed by clicking the button, or enter a value in 1 dpiincrements.
Refer to "Resolution" for your model from Home of the  Online Manual for details.
When Select Source is Platen:
You can enter a value within the range of 25 dpi to 19200 dpi.
When Select Source is Document (ADF Simplex) or Document (ADF Duplex):
You can enter a value within the range of 25 dpi to 600 dpi.
Output Size Select an output size.
Select  Flexible  to set custom sizes or select a size for printing or displaying. Select  Add/Delete... to set
custom size and save it as a new output size option.
Flexible You can specify the output resolution and scale, and adjust the cropping frames (scan areas).
In thumbnail view:Drag the mouse over a thumbnail to display a cropping frame. When a cropping frame is displayed,
the portion within the cropping frame will be scanned. When no cropping frame is displayed, each
frame is scanned individually.
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							In whole image view:
When no cropping frame is displayed, the entire Preview area will be scanned. When a cropping
frame is displayed, the portion within the cropping frame will be scanned.
Note
•
To enlarge/reduce the scanned image, enter values into  (Width) and  (Height) in
Output Settings  or specify a value (by 1 %) for  %. Although the maximum value available for
%  depends on the  Output Resolution , it can be specified for up to 19200 dpi (the maximum
available output resolution).
Paper Size (L, A4, etc.) & Monitor Size (1024 x 768 pixels, etc.)
 (Width),  (Height), and scale cannot be specified. The preview image will be cropped
according to the selected output size and resolution. The portion within the cropping frame will be
scanned at the size of the selected paper/monitor size. You can drag the cropping frame to
enlarge, reduce, or move it while maintaining the aspect ratio.
Add/Delete... Opens the  Add/Delete the Output Size  dialog box, in which you can specify custom output sizes.
In the Add/Delete the Output Size  dialog box, you can specify multiple output sizes and save
them at one time. Saved items will be registered to the  Output Size list and can be selected, along
with the predefined items.
Adding:
Select  Print or Image display  for Destination , then enter Output Size Name , Width , and Height ,
then click  Add. For  Unit, you can select  inches or mm  when  Destination  is Print  but you can only
select  pixels when  Destination  is Image display . The name of the added size appears in  Output
Size List . Click Save to save the items listed in  Output Size List.
Deleting:
Select the output size you want to delete in  Output Size List, then click Delete. Click Save to save
the items listed in  Output Size List.
Important
•
You cannot delete predefined output sizes such as  A4 and  1024 x 768 pixels .
Note
•
Save up to 10 items for each destination.
•
An error message appears when you enter a value outside the setting range. Enter a value
within the range displayed in the message.
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							Note•
Refer to "Adjusting Cropping Frames (ScanGear)" for details on cropping frames.
•
For details on whether or how the cropping frame is initially displayed on a preview image, refer to
Cropping Frame on Previewed Images  in "
Preview Tab" (Preferences  dialog box).
 (Switch Aspect Ratio)
Available when  Output Size is set to anything but  Flexible.
Click this button to rotate the cropping frame. Click again to return it to the original orientation.
Data Size The data size when scanned with the current settings is displayed.
Note
•
When the data size exceeds a certain size, the value appears in red. In that case, a warning
message appears when you click  Scan. It is recommended that you adjust the settings to reduce
Data Size . To continue, scan in whole image view.
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							Image Settings
Important
•
Do not apply these functions to images without moire, dust/scratches, or faded colors. The color tone
may be adversely affected.
•
Image correction results may not be reflected in the preview image.
Note
•
Selectable settings depend on  Color Mode settings.
•
Scanning may take longer than usual when you use  Image Settings.
Image Settings  allows you to set the following items:
Image Adjustment When Image Adjustment is set, the brightness of the specified portion of the image is optimized. Images
can be adjusted according to the automatically detected document type or the specified document type. The result of the adjustment will be reflected in the entire image.
None Image Adjustment will not be applied.
Auto Applies Image Adjustment by automatically detecting the document type. It is recommended that
you normally select this setting.
Photo Applies Image Adjustment suitable for photos.
Magazine Applies Image Adjustment suitable for magazines.
Document Applies Image Adjustment suitable for text documents.
Important
•
You can set  Image Adjustment  after preview.
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							•You can set this setting when Recommended is selected on the  Color Settings tab of the
Preferences  dialog box.
Note
•
If the image is not adjusted properly with  Auto, specify the document type.
•
The color tone may change from the source image due to the Image Adjustment. In that case, set
Image Adjustment  to None .
Reduce Show-through Use this function to reduce show-through in duplex documents or lighten the base color in recycled
paper and other colored paper when scanning documents.
OFF Show-through will not be reduced.
ON Select this to reduce show-through in duplex documents or lighten the base color. It isrecommended that you normally select this setting.
Important
•
Reduce Show-through  can be set when Recommended is selected on the  Color Settings tab of
the  Preferences  dialog box and  Document or Magazine  is selected for  Image Adjustment .
Unsharp Mask Emphasizes the outline of the subjects to sharpen the image when scanning photos.
OFF Unsharp Mask will not be applied.
ON Emphasizes the outline of the subjects to sharpen the image. It is recommended that you normally
select this setting.
Descreen Printed photos and pictures are displayed as a collection of fine dots. "Moire" is a phenomenon where
uneven gradation or a stripe pattern appears when such photos or pictures printed with fine dots are
scanned.  Descreen  is the function for reducing this moire effect.
OFF Moire will not be reduced.
ON Reduces moire. It is recommended that you normally select this setting.
Note
•
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 .
Reduce Dust and Scratches Scanned photos may contain white dots caused by dust or scratches. Use this function to reduce such
noise.
None Dust and scratches will not be reduced.
Low Select this to reduce small dust particles and scratches. Large ones may remain.
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							MediumIt is recommended that you normally select this setting.
High Select this to reduce large dust particles and scratches; however, evidence of the reductionprocess may remain or delicate parts of the image may be removed.
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 aphenomenon where a specific color affects the entire picture due to the weather or ambient strong
colors.
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.
•
You can set this setting when  Recommended is selected on the  Color Settings tab of the
Preferences  dialog box.
•
Correction may not be applied properly if the scan area is too small.
Grain Correction Use this function to reduce graininess (roughness) in photos taken with high-speed or sensitized film.
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
image.
Important
•
Correction may not be applied properly if the scan area is too small.
Gutter Shadow Correction Use this function to correct shadows that appear between pages when scanning open booklets.
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							When you set the Gutter Shadow Correction  setting in the preview 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
•
You can set  Gutter Shadow Correction  after preview.
•
Do not place objects 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.
•
Align the document with the edge of the Platen. If not, the shadow will not be corrected properly.
•
Shadows may not be corrected properly depending on the document. If the page background is notwhite, 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 (scan area) on the previewimage.
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							Adjusting Cropping Frames (ScanGear)
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							Color Adjustment ButtonsThe Color Adjustment Buttons allow you to make fine corrections to the image brightness and color tones
including adjustments to the image's overall brightness or contrast and adjustments to its highlight and
shadow values (histogram) or balance (tone curve).
Important
•
The Color Adjustment Buttons are not available when you select  Color Matching on the Color
Settings  tab of the  Preferences  dialog box.
Note
•
Selectable settings depend on  Color Mode settings.
•
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 saturation (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
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							 (Histogram)
A histogram allows you to see the data concentration at each brightness level of an image. You can specify the brightest level (highlight) and darkest level (shadow) within an image, cut the levels and expand the middle of the tonal range of the image.
Adjusting Histogram
 (Tone Curve Settings)
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 L 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 of 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.
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