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AppendixA-12
A
Color temperature
The temperature in Kelvins (K) to represent the color of a light source,
determined by heating a perfectly black body until its color matches that
of the light source. Color temperature is higher when the color is bluish
and lower when reddish.
Condensation
Moisture condensation on the VTR tape transport mechanism.
Condensation on the head drum causes tape to stick to the drum,
resulting in damage to tape and a malfunction of the VTR.
CRT
Cathode-Ray Tube. Video camera viewfinders are equipped with a CRT
image display, so you can monitor what you are shooting.
CTL
Control signal in the form of regular pulses recorded along a longitudinal
track on the video tape. By counting these pulses, it is possible to
determine the number of frames, and hence the tape running time. Used
mainly to adjust the tracking position of video heads, and to achieve time
code continuity in continuous recording.
DCC
Dynamic Contrast Control. A video camera containing a DCC circuit can
handle a wide dynamic range of luminance.
Diopter
A measure of lens power ; its unit is the reciprocal of 1 m (3.28 ft). A
diopter lens is a simple supplementary lens placed over the main camera
lens to alter its effective focal length.