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Chapter 7 - Colour and Brightness
There are four ways to modify the colour and brightness of fixtures connected to the Tessera
system.
l Global colour - the controls on the Colour tab will affect all fixtures connected to the
processor. Global Colour controls are located on the Colour tab to the right of the
Main Project Screen.
l Per-panel colour - it is possible to override the Global Colour settings for specific fix-
tures by enabling the Override Global Colour option on the Properties tab, which activ-
ates a set of sliders contained there (see Override Global Colour later in this chapter).
l Per-Group specific colour - colour settings can be adjusted for individual Groups of pan-
els by enabling the Override Global Colour option as above.
l Input colour - you can modify the colour balance of a specific input (DVI, SDI or ana-
logue).
Intensity Gain
The Intensity Gain slider in the Global Colour settings allows users to modify the light output
of all the fixtures in the system in a perceptually linear way, so at 50% fixtures will look half as
bright to the naked eye as they did at 100%. The precise light output of the screen will depend
on this value in conjunction with the Brightness slider.
Brightness
The brightness scale allows adjustment of the light output of the screen. As all fixture types
are calibrated when the profile is written, the brightness scale is expressed in Nits
(candela/m
2
). This means arrays with different fixtures can quickly be set to the same output
level.
Where more than one type of fixture with different maximum brightness values is used, the
slider will cease to have an effect on a fixture's brightness once its maximum value is
exceeded.
The brightness slider will have a default value of the brightest value that all the fixtures in a
project can reach. Therefore if a project consists of two different types of fixtures, one of
which has a maximum output of 5000 Nits and one of which has a maximum brightness of
2000 Nits the default value of the brightness slider will be 2000 Nits. Similarly the maximum
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