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The first three rows of the Colour Matrix (Figure 19) show the
relative amounts of R
p
, G
p
and B
p
light used to represent Red,
Green and Blue input video data respectively. Red, Green
and Blue inputs are arranged down the side of the Colour
Matrix. Weighting factors in the range 0 (minimum) to 100
(maximum) are arranged across each row. These determine
the amount of R
p
, G
p
and B
p
light used to represent each of the
Red, Green and Blue inputs, so determining the colour gamut
of the Viewfinder video display.
The default Colour Matrix shown in Figure 10 is a pure
translation of input video data to the most extreme display
colour gamut possible, with Red, Green and Blue being
represented by pure R
p
, G
p
and B
p
respectively. The effect of
adding R
p
in the Viewfinder representation of Green (Figure
19) is to make Green appear more yellow within the Viewfinder
display. If plotted on a CIE Colour Chart (Figure 18), this
representation of Green would move downwards towards R
p
from the position of G
p
, the pure LED colour, closer to the
position of Rec. 709 Green.
R G and B factors should be set within the range 0 – 100
The sum of R, G and B factors (excluding I factors) in each
column of the matrix must not exceed 100; otherwise video
image distortion may occur.
Optimum colour resolution is obtained when the largest
column sum is 100 or just less (R, G and B factors only,
excluding I factor).
