The Hybrid Photon Counting (HPC) technology enables a parallel readout system with high frame rates to achieve high-speed imaging. Every EIGER pixel features a digital counter for noise-free counting of the observed photons. A readout buffer accompanies this digital counter in each pixel. After frame acquisition, the state of the counter is buffered virtually instantly. A subsequent frame will start while the previous frame is being read out from the buffer. The continuous readout maximizes duty-cycle and data collection efficiency and enables frame rates far beyond 1 kilohertz.