Lighting system having - a first lighting device, - a second lighting device with several lamps, - a first control device for controlling a brightness of the first lighting device, and - a second control device for controlling a brightness of the second lighting device, - wherein a PI behaviour of all control devices (1, 2) is substantially identical and all control devices (1, 2) have the same control algorithm, - wherein the lighting system further has: • either variant A: a generator apparatus for generating a trigger signal, wherein the first control device and the second control devices are configured such that initiated by the trigger signal they start a control calculation procedure simultaneously in each case, • or variant B: the first control device as a master for generating a trigger signal, wherein the first control device as a master and the second control devices as slaves are configured such that initiated by the trigger signal they start a control calculation procedure simultaneously in each case, - wherein the trigger signal is generatable cyclically by the generator apparatus or the master, and - wherein the control calculation procedure is a first of n control calculation procedures, wherein n is a natural number greater than or equal to 2, the trigger signal is only transmitted to the respective control devices with the first control calculation procedure of the n control calculation procedures, and a trigger signal is retransmitted to the respective control devices only at the joint start of the n+1th control calculation procedure. - a first lighting device, - a second lighting device with several lamps, - a first control device for controlling a brightness of the first lighting device, and - a second control device for controlling a brightness of the second lighting device, - wherein a PI behaviour of all control devices (1, 2) is substantially identical and all control devices (1, 2) have the same control algorithm, - wherein the lighting system further has: • either variant A: a generator apparatus for generating a trigger signal, wherein the first control device and the second control devices are configured such that initiated by the trigger signal they start a control calculation procedure simultaneously in each case, • or variant B: the first control device as a master for generating a trigger signal, wherein the first control device as a master and the second control devices as slaves are configured such that initiated by the trigger signal they start a control calculation procedure simultaneously in each case, • either variant A: a generator apparatus for generating a trigger signal, wherein the first control device and the second control devices are configured such that initiated by the trigger signal they start a control calculation procedure simultaneously in each case, • or variant B: the first control device as a master for generating a trigger signal, wherein the first control device as a master and the second control devices as slaves are configured such that initiated by the trigger signal they start a control calculation procedure simultaneously in each case, - wherein the trigger signal is generatable cyclically by the generator apparatus or the master, and - wherein the control calculation procedure is a first of n control calculation procedures, wherein n is a natural number greater than or equal to 2, the trigger signal is only transmitted to the respective control devices with the first control calculation procedure of the n control calculation procedures, and a trigger signal is retransmitted to the respective control devices only at the joint start of the n+1th control calculation procedure.