BLACK
LEVEL
[Film Technology]
(set-up, sit) Adjusting camera channel black level moves the picture tones down or up the tonal
scale, the effect being most
noticeable in darker tones. Sat down (batting down), all dark tones
clipped to black, light tones down scaled
(unless compensated for by video gain increase).
No longer subject tones become visible.
Normalist, sat up. No dark greys or black in the
pictures; lightest tones may be merged. Cut off by the white clipper limit. No
lower subject tones become visible through sit
up. Technical term for the part of the video wave from representing black
in the picture. Considering the video monochrome signal. To make the scanning pattern
into a picture the strength of the beam must be
varied (modulated) by a picture signal. At a
minimum video strength(its black level) the beam is cut-off, and the screen
appears black.
e-mail : pratheepvasudev@gmail.com
No comments:
Post a Comment