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A-16 Appendix
A
User bits
A total of 32 bits are provided in the time code which the user can use to
record such information as date, scene number, or reel number on video
tape.
Vertical smear
A bright vertical line which appears on the screen when shooting a very
bright object with a CCD camera. Also called smear.
Video gain
Amount of amplification for video signals, expressed in decibels (dB).
VITC
Vertical Interval Time Code. A time code recorded on video tape in two
horizontal lines during each vertical blanking period of a video signal.
Unlike LTC, VITC is recorded in the same tracks as the video
information, so they can be read even while the tape is not moving. See
also Time code and LTC.
White balance adjustment
In the light of a particular color temperature, to adjust the white levels of
the R, G, and B channels of a color video camera so that any white
object shot in that light is reproduced as a truly white image. See also
Color temperature.
White shading
When shooting a white object, the upper and lower portions of the screen
may appear magenta or green while the central portion appears white,
depending on the performance of the camera lens. This is called white
shading.