Canon N1220U, N656U, N650U manual Brightness and Contrast Settings

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Brightness and Contrast Settings

You can adjust the image with two slide bars, one for contrast and one for brightness. Use this method to adjust an image before scanning if it is slightly out of focus or too dark.

Hint

• You cannot use this feature with the black and white or color scan modes when ColorSync is selected.

Contrast

Contrast is the difference between the lightest light and the darkest dark in the image. A high contrast setting creates a great difference between light and dark shades, and there is a very sharp distinction between light and dark areas of the image. A low contrast setting creates a small difference between light and dark shades, and the distinction between light and dark areas of the image are not as obvious.

Contrast = 128 (Normal)

Contrast = 170

Contrast = 100

If the image appears slightly out of focus, increase the contrast setting to sharpen the image. If the contrast setting is too high, shadows will blacken and the highlights will wash out.

Brightness

Brightness is the overall lightness or darkness of an image without changing the contrast. Adjust the brightness setting to change the overall lightness or darkness of the entire image. If the brightness setting is too high, the highlights will wash out, and if too low, the shadows will blacken.

Brightness = 128 (Normal)

Brightness = 190

Brightness = 80

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Contents Users Guide When you open the box How to Make Best Use of the ManualsWhere to Look How to Use this GuideAbout the Conventions Used in this Guide Table of Contents Adjusting Scanned Images Operating Environment Installing Plug-in Module CS-UImage Size pp Control Panel FeaturesE P Scanning ProceduresColorSync Ver 2.0 + Compatible for Auto Tone Correction Plug-in Module CS-U Special FeaturesSee the Results of Adjustments Immediately Dynamic Preview Gamma Curve Adjusts Image BrightnessPosition materials for scanning and preview them Install Plug-in Module CS-UQuick Start Instructions Start Plug-in Module CS-USelect the area to be scanned by clicking and dragging Verify Image Quality with the Browser Function beforeSpecify the Area of the Image to be Scanned Click on the Browser button Selection frame will appearSave the Scanned Image p Scan the Image pE P RGB Values Displaying the Plug-in Module CS-U Control PanelOperating Procedures Positioning Originals ProceduresPlace the original on the scanners document glass Click on the Preview button PreviewingSelecting the Output Device Output Device Resolution= 720 dpi, Magnification= 100% Setting the Resolution and MagnificationSet the desired magnification factor on the control panel To Set the Magnification FactorColor Documents Setting the Scan ModeBlack and White GrayscaleSelect a scan mode from the pop-up menu Click the arrow beside Scan ModeTo Verify the Image Verifying the Image before ScanningUse these buttons to rotate the image Rotating the ImageOutput Device Setting PreferencesAspect Ratio Preview Window UnitCalibration Reset Default SettingsClose Plug-in After Scan Operating Procedures Scanning Position the pointer in the preview window Setting the Scan AreaZooming Procedures to ZoomSelect the area you want to enlarge with the zoom function Click on the Zoom In button Click on the Scan button ScanningTo Initiate the Scan Specify the Scan AreaEnter a name for the file and click the Save button Saving Scanned ImagesBlack & White Grayscale, Color Photos and Color DocumentsColor Photos and Color Documents Tone Adjustment Dialog Tone AdjustmentHow to Interpret Histograms Histogram SettingsHow to Adjust Histograms To Adjust a HistogramShadow Mark Click on the OK buttonManipulating the Graph Tone Curve SettingsClick the OK button To Edit the Tone CurveValue = Relationship Between the Tone Curve Image BrightnessContrast Brightness and Contrast SettingsBrightness To Adjust the Brightness and Contrast Operating Procedure Adjusting the Color BalanceMatching the Gamma Value to the Display Characteristics Gamma Value SettingsGamma value To Change the Gamma Value Settings To Set the Threshold Value Adjusting the Threshold ValueColorSync Auto Tone CorrectionTo Set the Auto Tone Correction StandardOpen the Image menu and select Unsharp Mask Unsharp MaskOpen the Image menu and select Descreen DescreenTo Save Settings in a Settings File Saving/Recalling SettingsClick the Save button To Recall a Settings File Optical and Enhanced Resolutions Matching Scan Resolution to PurposeScanning Techniques Appendices Troubleshooting Problem Scan button cannot be selected Response Error MessagesError Message CauseBlack Eyedropper Tool GlossaryAuto Tone Correction Bits/Bit NumbersDot Color ChannelImage File HistogramMagnification Pixel Optical ResolutionResolution MoiréTone Curve Scan ModeShadows Threshold ValueOutput device 7, 11, 18, 25 IndexPage Canon Computer SYSTEMS, INC Canon Customer Support Help DeskOE-040AA 052000 CDS Canon Inc