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Appendices
Glossary
Horizontal resolution
The capability of a camera to resolve detail in a
horizontal! direction. It is usually expressed as the number
of vertical lines which can be distinguished on the
monitor screen when shooting a test chart.
Iris
A diaphragm which controls the amount of light passing
through the lens.
Pedestal level
Reference video level. Since signals close to the reference
black level of the video signal contain noise, the pedestal
level is set at about 10% above the blanking level.
Shutter speed
The length of time a shutter remains open. The faster the
shutter speed, the less the shot image blurs but the darker
it looks.
A-6(E) | Appendices Glossary
Subcarrier
The color information signal contained in a video signal.
Its phase is for hue and its amplitude, color saturation.
VBS
Abbreviation of Video, Burst and Sync. A composite
signal consisting of video signal, burst signal and sync
signal.
Video gain
Amount of amplification for video signals, expressed in
decibels (dB).
White balancing
In the light of a particular color temperature, to adjust
the white levels of the R, G and B signals of a video
camera so that any white subject shot in that light is
reproduced as a truly white image. See "Color
temperature.'
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