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is this WAVY image only from Scanning of Glass ??/
First > Try not selecting "HEAVY" in control panel option/ select PLAIN when using Bypass tray
That original 12X18 PICTURE> is it printed on shinny/glossy stock ? like from a magazine ??
where is 12x18 original from ??
created by you ? from a book/magazine ? downloaded from online ?
That scanned 8X11 from original may be a victim of>moiré pattern effect>Moiré patterns are caused by interference between two sets of fine pattern grids, the scanner samples and the halftone screen in the original image. Any scanner will do this,
it's a simple fact of life.
Any image printed (
like a book, magazine, newspaper, postcard, calendar, etc.) is printed with halftone screen patterns. The printed image is composed of a pattern of dots. A strong magnifying glass will show them.
The halftone dots are printed entirely in black if a B&W image, or there are four screens in each of the three primary colors plus black (CMYK) if a Color image. These fine dots cause optical problems in a scanned image because the scanned image is also composed of fine dots.
The two patterns of dots, the printed magazine's 133 or 150 lpi screened pattern, and the 300 or 600 dpi scanner CCD cells, combine into maximums or minimums every several pixels in the image, depending on the spacing of the dots. It affects the overall light intensity in periodic patterns that become very visible. The pattern is named Moiré.
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