Leica TCS SP5 II the system combines a true confocal scanner for excel- lent imaging and a resonant scanner for high speed imaging. The resonant scanner can acquire the data 10 times faster than conventional confocals: with up to 25 frames per second. This is sufficient to display flicker-free real data. But also much faster processes can be recorded and analyzed, if restricted to fewer lines. At a frame format of 512 x 32 pixels, the resonant scanner acquires up to 250 frames per second.