Canon printer PIXMA MG5721 User Manual
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Move (Slider) under Color Balance to the left or right to emphasize the corresponding color. Cyan & Red Magenta & Green Yellow & Blue These are complementary color pairs (each pair produces a shade of gray when mixed). You can reproduce the natural colors of the scene by reducing the cast color and increasing the complementary color. It is usually difficult to correct the image completely by adjusting only one color pair. It is recommended that you find a portion in the image where it should be white, and adjust all three color pairs so that the portion turns white. You can also enter a value (-127 to 127). Below is an example of an image in which the "Cyan & Red" pair has been adjusted.Cyan is increasedRed is increased 691
Adjusting Brightness and ContrastYou can adjust images that are too dark or bright, or too flat due to lack of contrast by using (Brightness/Contrast) in ScanGear (scanner driver)'s Advanced Mode tab. Note
Brightness Adjust the image brightness. Move (Slider) under Brightness to the left to darken and right to brighten the image. You can also enter a value (-127 to 127). DarkenedOriginal imageBrightened Note
Adjusting HistogramYou can adjust the image color tone by using a graph (histogram) showing brightness distribution, via (Histogram) in ScanGear (scanner driver)'s Advanced Mode tab. Note
(1) Bright area(2) Dark area(3) Whole imageMore data is distributed to thehighlight side.More data is distributed to the shadow side.Data is widely distributed between thehighlight and shadow. Adjusting Histograms (Using the Slider) Select a Channel , then move (Black-point Slider) or (White-point Slider) to specify the level to be set as the shadow or highlight.
Moving the Mid-point SliderMove the Mid-point Slider to specify the level to be set as the middle of the tonal range. Images with more data distributed to the highlight side Move the Mid-point Slider toward the highlight side. Images with more data distributed to the shadow side Move the Mid-point Slider toward the shadow side. Adjusting Histograms (Using the Droppers) When you select a Channel and click the Black-point, Mid-point, or White-point Dropper, the mouse pointer on the preview image changes to a dropper. Click a Dropper displayed below the histogram to change the setting.
Adjusting Tone CurveYou can adjust the brightness of an image by selecting the type of graph (tone curve) showing the balance of tone input and output, via (Tone Curve Settings) in ScanGear (scanner driver)'s Advanced Mode tab. Note
Adjusting Tone Curve In Select Tone Curve , select a tone curve from No correction, Overexposure , Underexposure , High contrast , Reverse the negative/positive image , and Edit custom curve . No correction (No adjustment) Overexposure (Convex curve) The midtone data of the input side is stretched toward the highlight of the output side, resulting in a bright- toned image when viewed on a monitor. Underexposure (Concave curve) The midtone data of the input side is stretched toward the shadow of the output side, resulting in a dark- toned image when viewed on a monitor. High contrast (S curve) The highlight and shadow of the input side are enhanced, resulting in a high-contrast image. Reverse the negative/positive image (Downward-sloping line) The input and output sides are reversed, resulting in a negative-positive inverted image. 699
Edit custom curve You can drag specific points on the Tone Curve to freely adjust the brightness of the corresponding areas. 700