The present invention relates to remote photoplethysmography and in particular to a system (1) and method for determining vital sign information of a subject (100). The system comprises a filter (10) for application to a detection unit, said filter further comprising a first filter area (11) configured to transmit light (A) at a first wavelength and a second filter area (12) configured to transmit light (D) at a second wavelength, the detection unit (22) for detecting radiation received from the first filter area and from the second filter area of the filter, and an analysis unit (6) for determining the vital sign information of the subject from the detected radiation from the first filter area and from the second filter area.
