Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
Explanation: This is about the colour temperature of TV and Video pictures.
The two colours in question are Blue (which is cold, e.g. daylight) and Yellow (which is warm, e.g. tungsten or candlelight).
The "Weisswert" balances cold and warm light in order for the colours to appear naturally, as opposed to just hues of yellow or blue.
Every Video camera has a button called "Weissabgleich", which has to be done before filming in order to adjust colour temperature within the existing light of the location/shot.