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AppendixA-14
A
FIT
Frame Interline Transfer. A type of CCD imager featuring substantially
reduced vertical smear. See also CCD and Vertical smear.
Flange focal length
The distance from the plane of lens mounting flange to the image focal
plane. Abbreviated to Ff.
Flare
Dark or colored flashes caused by signal overload through extreme light
reflections of polished objects or very bright lights.
Flicker
Repeated change of brightness on the screen.
Genlock
Generator lock. To synchronize the pulse generator built into video
equipment to an external reference (master) sync signal.
Geometric distortion
Any change in geometry or perspective of the reproduced image from the
original.
HAD
Hole-Accumulated Diode. A CCD sensor structure designed to suppress
certain types of noise inherent to CCDs. See also CCD.
Horizontal resolution
The capability of a video camera or a display unit to preserve detail in
the horizontal direction. Usually expressed as the number of vertical
lines which can be distinguished in the reproduced image of a test chart.