Zip - To compress a file (usually text) using PKZIP or WinZIP, two popular programs. Commonly used to reduce the size of a file to speed up transmission over the internet or an on-line service.
ISO - A measure of the light sensitivity of a piece of film or a digital sensor. The higher the ISO, the greater the sensitivity. ISO is one of three exposure controls on a digital camera, in addition to aperture and shutter speed selection. Each exposure control allows you to affect different image characteristics.
CD-R (CD-Recordable) - A CD format that allows the users to record data to a disc when using the proper hardware. Recorded data is not erasable.
24-bit Color - A digital color model that uses eight bits each for the three additive colors red, green and blue; creating more than 16 million colors.
Digital Camera - A filmless camera system. Any camera system that is capable of converting an analog image info a digital signal or file.
SmartMedia - A digital camera memory format currently used by some Olympus and Fuji cameras. These companies are using xD-Picture cards in their newer cameras, raising the possibility that the SmartMedia format is on the way out. SmartMedia cards are available in sizes up to 128MB.
Resolution - A measure of how closely packed the dots in a bitmapped image are, often expressed in dots per inch (dpi) or lines per inch (lpi). The higher the number, the higher the quality. However, doubling the resolution of an image results in a computer file four times as large, requiring more hard disk space and computer memory to handle the higher quality image. Resolution is also used to describe how close together a computer printer can print dots in an image. Again, the larger the number, the higher the quality. It is important to know the capability of the printer's resolution before scanning an image in order to get enough information to print the best quality.
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