We have bought 12 camera with ARENA and use it 2 days after a month rituals with russian custom-house.
First of all what should I say... It's really work. Thank you guys

But I must confess we were await of the system more results.
The main problem is a very small capture volume what we get.
How could we increase it?
We set up the cameras to truss system according to 12-cam scheme from the site and put top at 2,5 meter (about 8'). Capture volume is about 2,5m x 2m and it's not enough to get full cycle for running characters for our game.