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For the broadcasting of the 12th World Athletic Championships from 15th - 23rd August in Berlin, the German public broadcasters ARD and ZDF established the host broadcast service BERTA (Berlin Radio Television Athletics) to produce the official world feed of the championships in 1080i and to deliver it to broadcast right holders in more than 165 countries. For the installation and the operation of the technical infrastructure BERTA hired the Berlin based production company TopVision for all the events in the Olympic Stadium, while SWR together with Betamobile produced the signals of the walking and marathon disciplines at the Brandenburg Gate.
On the other hand they have to be particularly stable and rigid as they are often used with very long lenses. The slightest trace of instability in a camera mount when used at the extreme end of an 80x or 100x lens will look like a major disruption.