Canon FB636U User's Guide download pdf (Page 77)

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Glossary

Low contrast

An image that has low contrast does not have many distinct

differences between tones.

Mid-point

The midtone portion of the image scanned as Color or Grayscale.

When you click on the image with the Mid-point eyedropper, all

tones between the black-point and the white-point are adjusted

in relation to the mid-point setting.

Mid-tone

Mid-tones are the middle range of tones in an image, between

highlights and shadows. Midtones can be adjusted for color and

grayscale images with the Gamma tool.

Mode

The type of scan used to scan an image, differentiated by the

number of bits per pixel. ScanGear CS has the following Scan

Modes: Color, High Definition Color, Grayscale, Text Enhanced, and

Black and White.

Moiré reduction

Moiré reduction can be switched on with the Descreen button on

the Scanner sheet. Moiré patterns are caused by poor dithering as

a result of scanning images from published materials like

newspapers, magazines, books, etc. When the Descreen feature is

on, moiré reduction smooths the overall appearance of the image

and enhances image quality.

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Canon FB636U User's Guide Page 77