LowSelect this when the photo is slightly grainy.MediumIt is recommended that you normally select this setting.HighSelect this when the photo is very grainy. This can affect the gradation and sharpness of theimage.Important• Correction may not be applied properly if the scan area is too small.Gutter CorrectionUse this function to correct shadows that appear between pages when scanning open booklets.Unclear or blurred text/lines caused by curved pages are not corrected.NoneGutter shadow will not be corrected.LowSelect this when the effect level is too strong with the medium setting.MediumIt is recommended that you normally select this setting.HighSelect this when the effect level is too weak with the medium setting.Important• Do not place objects that weigh 4.4 lbs (2.0 kg) or more on the platen. In addition, do not press onthe item with a force exceeding 4.4 lbs (2.0 kg). If you press heavily, the scanner may not workcorrectly or you might break the glass.• Align the item with the edge of the platen. If placed slanted, correction will not be applied properly.• Correction may not be applied properly depending on the item. 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 previewthe scan. If the binding part is not even, correction will not be applied properly.601