UMAX Technologies AstraNET e5420 Owner's Manual page 21

Changing the Image Mode
VistaScan can scan a wide variety of image types.
True Color, RGB: Scans a full photo or document. The RGB indicates the colors Red, Green, and Blue.
This setting creates larger files than the B/W Photo Setting.
True Color, CMYK: Converts RGB (video) color data into CMYK (printed) color data using a special
color transformation process. When scanning is completed the CMYK image is ready for printing on a
CMYK color printer.
NOTE: Most ink jet printers use RGB rather than CMYK printing.
256 Colors: Scans color images using 256 colors. The 256 color images take up less memory and hard
disk space than the True Color RGB option.
Web Photo: Scans an image at the appropriate resolution for display on the monitor.
B/W Photo: Scans black-and-white photos using 256 shades of gray (ranging from white to black) so you
get smooth shade transitions in your scanned image.
B/W Document: Scans text documents, black-and-white line art, and other black-and-white documents.
This selection creates the smallest files.
FAX: Scans at the appropriate resolution for faxing.
OCR: Scans at the appropriate settings for optimal OCR recognition.
True Color 42-bit RGB: Scans a full-color photo or document using 42-bits of information to define each
pixel. The RGB indicates the colors of Red, Green, and Blue. This setting creates larger files than the True
Color RGB setting.
B/W Photo, 14-bit: Scans a black-and-white photo using 14-bits of data to define each pixel. This setting
produces more gray shade accuracy than the B/W Photo option, but also produces larger file sizes.
NOTE: Not all graphic applications support higher than 24-bit graphic files. To determine whether the
software you want to use is capable of working with higher than 24-bit graphics, refer to your software
documentation.
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