Canon 4207B002 User Manual - Page 143

Scan Settings Dialog Box Page 143 of 334 pages This mode renders the image in black and white. The contrast in the image is divided at certain levels (threshold level) into black and white and is rendered in two colors. Important You cannot select Black and White if Document Type is film. Document Size Select the size of the document to be scanned. When you select Custom, a screen in which you can specify the document size appears. Select a Units, then enter the Width and Height and click OK. Important When you select Auto Detect, the image may not be scanned at the correct position and size. In that case, change the size to the actual document size (A4, Letter, etc.) and align a corner of the document with the corner at the arrow (alignment mark) of the Platen. Scanning Resolution Select the resolution at which to scan documents. The following scanning resolutions can be specified: When Document Type is other than film: 75 dpi / 100 dpi / 150 dpi / 200 dpi / 300 dpi / 400 dpi / 600 dpi When Document Type is film: 300 dpi / 400 dpi / 600 dpi / 1200 dpi / 2400 dpi / 4800 dpi Resolution Recommended Image Correction / Auto Photo Fix / Auto Document Fix The displayed item varies by Document Type. Recommended Image Correction This is displayed when Document Type is Auto Mode. Select this checkbox to apply Auto Photo Fix or Auto Document Fix based on the document type. Auto Photo Fix This is displayed when Document Type is Photo or film. 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 Document or Magazine. 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. When this checkbox is selected, Easy Color Matching in the Print dialog box will be unavailable. These functions are not available when the Scan Settings dialog box is opened from the OCR dialog box. Auto Photo Fix is not available when Color Mode is Grayscale or Black and White. Auto Document Fix is not available when Color Mode is Black and White. 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.