SCSI

Small Computer System Interface. EPSON scanners use the SCSI interface to communicate between the Macintosh and the scanner.

Shadow

The darkest area of an image. The range between highlight and shadow determines the range and the color differentiation of the image.

Sharpness

The measure of enhanced detail in an image.

Threshold

The point at which the gray values are changed to either black or white.

TIFF5.0

Tagged Image File Format, version 5.0. TIFF is an industry- standard file format supported by many applications.

TIFF6.0(JPEG)

Tagged Image File Format, version 6.0 with JPEG compression. TIFF and JPEG are industry-standard file formats supported by many applications.

Transfer Curve

A Gamma correction graph which shows the contrast ratio between the input (original image) and output (image data) in image processing.

Transparency Unit

A scanner accessory which allows the scanner to use materials such as transparencies.

TWAIN

An open industry interface allowing you to acquire image data directly from external sources without leaving your current application.

Zoom

The ability to enlarge a portion of an image.

Term Glossary 5