The ultimate system is the pco.dicam C4. It combines four pco.dicam C1in one housing. Four image intensifiers, four tandem lenses, four image sensors, everything is 4-fold. There is also another tandem lens with prisms in front of the image intensifiers, which distributes the same image to all the channels. The pco.dicam C4 may not be as compact as many other PCO cameras, however when it comes to light sensitivity and frame rate, it offers the maximum possible today. "It’s a niche market," says Walter Tutsch, sales engineer at PCO. "But the particle physics, e. g. high-energy physics, where exposure times are sometimes just a billionth of a second, require such cameras."