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Glossary
Color
On a computer, color information is expressed by combining various
ratios of the three primary colors: red, green and blue (RGB). The DZ-
3600U is capable of expressing each of the primary colors in 256 hues (8
bits), which together create a total of approximately 16.7 million colors
(256 x 256 x 256) (24 bits) in which images can be expressed.
Grayscale
A grayscale image is one that is expressed in black, white and 254
shades of gray (a total of 256 tones). A grayscale image looks much like
a monochrome photograph.
HTML
Hyper Text Markup Language: a high-level programming language used to
create web pages for the Internet. Use Internet browser software to view
files created in this format.
Image File
A file that contains image data in a format that can be processed by a
computer. At the most fundamental level, an image file is comprised of
bitmap information, which is a series of dots (picture elements) assigned
color values that are arranged in a grid. There are numerous image file
formats, including the bitmap (BMP) and JPEG (JPG) formats, that may or
may not use compression and differ in the way the dots are arranged.
NEGA
The DZ-3600U mode that enables negative films to be scanned much like
a paper document. This mode produces coloration superior to the method
whereby a negative film is scanned as a negative and later inverted with
graphics software because it takes the color of the film base into account
in calibrating colors. If you look carefully at negative film, you will note
that the film itself has an orange tint. The invert function of graphics
programs generally are not capable of compensating for the film base
color, resulting in a poor color balance.
NTSC
A transmission standard for television signals used in Japan and North
America. Different standards are used in Western Europe (PAL) and
Eastern Europe (SECAM). Since the output from the DZ-3600U conforms
to the NTSC standard, it cannot be viewed on PAL or SECAM televisions
and video monitors.
Scanner
The word scanner is commonly used to refer to devices that load the
information from paper-based photographs, text and illustrations onto
computers. The DZ-3600U not only scans paper-based items, it is also
capable of scanning three-dimensional objects as they appear. The
process of using a scanner to load information into a computer is called
‘scanning.’