A lighting system comprising: a lighting unit comprising a light source emitting non-daylight light with radiation wavelengths exclusively in the range from approximately 400 nm to approximately 700 nm, a controller , and a first communication module; and a camera , remote from the lighting unit, comprising a filter and a second communication module; and wherein the filter is configured to allow a part of the visible light spectrum as well as the near infra-red light spectrum to pass through, the filter is configured to block incident light in a first wavelength range; wherein the incident light comprises both daylight and non-daylight incident light; and the first wavelength range defined as all wavelengths below an upper limit with the upper limit being between approximately 550 and 700 nm to allow the filter to block at least a portion of the non-daylight incident light; and wherein the camera is configured to receive the filtered incident light outside the first wavelength range, comprising a part of the visible light spectrum as well as the near infra-red light spectrum, to generate a detection signal that comprises pixel information of red, green, and/or blue color channels related to the filtered incident light; and wherein the second communication module is configured to send the detection signal to the first communication module; and wherein the first communication module is configured to receive the detection signal, and the controller is configured to process the detection signal to estimate the amount of daylight incident light in a lighting environment of the lighting system. a lighting unit comprising a light source emitting non-daylight light with radiation wavelengths exclusively in the range from approximately 400 nm to approximately 700 nm, a controller , and a first communication module; and a camera , remote from the lighting unit, comprising a filter and a second communication module; and wherein the filter is configured to allow a part of the visible light spectrum as well as the near infra-red light spectrum to pass through, the filter is configured to block incident light in a first wavelength range; wherein the incident light comprises both daylight and non-daylight incident light; and the first wavelength range defined as all wavelengths below an upper limit with the upper limit being between approximately 550 and 700 nm to allow the filter to block at least a portion of the non-daylight incident light; and wherein the camera is configured to receive the filtered incident light outside the first wavelength range, comprising a part of the visible light spectrum as well as the near infra-red light spectrum, to generate a detection signal that comprises pixel information of red, green, and/or blue color channels related to the filtered incident light; and wherein the second communication module is configured to send the detection signal to the first communication module; and wherein the first communication module is configured to receive the detection signal, and the controller is configured to process the detection signal to estimate the amount of daylight incident light in a lighting environment of the lighting system. <EOS>