1. An illumination system comprising: at least one luminaire which is configured to provide light according to a plurality of at least three preset combinations of illumination level and color temperature, wherein the color temperature and the illumination level are controlled via a control protocol; and a user interface configured to select the illumination level and color temperature from said plurality of preset combinations, the control protocol comprising transition times for transitions between said preset combinations, said transition times being in the range of about 2 seconds to about 5 minutes, wherein at least one combination of said plurality of preset combinations is a calm setting in which the illumination level is at least 100 lux and the color temperature is about 2900K, or a standard setting in which the illumination level is at least 100 lux and the color temperature is about 3500K, and at least one other combination of said plurality of preset combinations includes at least one of an energy setting in which the illumination level is about 650 lux and the color temperature is at least 9000 K or a focus setting in which the illumination level is at least about 750 lux and the color temperature is about 6500K, wherein the plurality of preset combinations comprises at least four preset combinations, and the illumination system further comprises a lighting controller comprising a motion detector which is configured to automatically switch-over the illumination system to the calm setting upon detection of a level of motion that supersedes a preset motion threshold value.