NewTek TriCaster 8000 - Manual (Page 498)

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camera’s Auto White Balance feature with the white card – your camera manual will
provide instructions. Afterwards, check the black level again.
Some more professional cameras offer full manual controls for white balance
and/or black level. Use these as instructed to ensure your camera is providing the
correct white and black levels.
If you cannot make source adjustments, or can’t get it quite right by these means
alone, you can use the Brightness and Contrast controls in the Proc Amp TriCaster
provides for that input to tweak black and white levels. (Of course it is always best
to perform adjustments at the source if possible.)
C.2.2 ADJUSTING COLOR
We’re going to move into color calibration next, but first we can actually use our
black and white signals for some further tests.
V ECTORSCOPE
While we’re still working with black and white levels, we can introduce TriCaster’s
Vectorscope, and perform an initial test of the camera’s color balance.
A vectorscope (Figure 402) can be likened to the familiar ‘color wheel’ (Figure 403)
which sweeps radially through the colors of the spectrum – yellow, red, magenta,
and so-on, around the arc of a circle. Colors are more progressively intense
(saturated) towards the outside of the circle, while color saturation is zero at its
center.
FIGURE 402 FIGURE 403