Canon DZ3600u manual Glossary, 118

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.’

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