Canon PIXMA MG6821 User Manual - Page 762

Medium It is recommended that you normally select this setting. High Select this to reduce large dust particles and scratches; however, evidence of the reduction process 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 a phenomenon 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. 762