Canon PIXMA MP280 On-Screen Manual - Page 422

Scan Settings Dialog Box (Photos/Documents) Page 422 of 707 pages Auto Photo Fix / Auto Document Fix The displayed item varies by Document Type. Auto Photo Fix This is displayed when Document Type is Color Photo. Select this checkbox to automatically analyze the captured scene (landscape, night scene, etc.) and apply suitable corrections. Auto Document Fix This is displayed when Document Type is Color Document, Black and White Document or Magazine(Color). Select this checkbox to sharpen text in a document or magazine for better readability. Important When this checkbox is selected, the files can be saved in JPEG/Exif or PDF format only. Scanning may take longer than usual when this checkbox is selected. You cannot select this checkbox when Document Type is Black and White Photo or Text(OCR). The color tone may change from the source image due to corrections. In that case, deselect the checkbox and scan. Descreen Select this checkbox to reduce moire patterns. 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. Important You cannot select this checkbox when Document Type is Color Photo, Black and White Photo or Text(OCR). Note Scanning takes longer than usual when you enable Descreen. Unsharp Mask Select this checkbox to emphasize the outline of the subjects and sharpen the image. Important You cannot select this checkbox when Document Type is Text(OCR). Remove gutter shadow Select this checkbox to correct shadows that appear between pages when scanning open booklets. Important You cannot select this checkbox when Auto Detect, Auto Detect (Multiple Documents) or Stitch Assist is selected for Document Size. When scanning, align a corner of the document with the corner at the arrow (alignment mark) of the Platen. Note Use ScanGear (scanner driver)'s Advanced Mode tab to correct gutter shadows when scanning non-standard size documents or when custom cropping frames are set. See "Gutter Shadow Correction " for details. Reduce Show-through Select this checkbox to sharpen text in a document or reduce show-through in newspapers. Important You cannot select this checkbox when Document Type is Color Photo, Black and White Photo or Text(OCR).