disclosed is a method for controlling a lighting apparatus comprising a first light source unit , a second light source unit and a third light source unit , all of which emit lights having mutually different color temperatures and mutually different color coordinates , the method comprising : outputting an r component signal , a g component signal and a b component signal , each of which respectively corresponds to light quantities of an r component , a g component and a b component of lights outputted from the first light source unit , the second light source unit and the third light source unit ; receiving the r component signal , the g component signal and the b component signal and generating a comparative color coordinate ; and comparing the comparative color coordinate with standard color coordinates located within an area formed by the respective color coordinates of the first , the second and the third light source units , and controlling light quantities of the first , the second and the third light source units in such a manner as to reduce an error value between the standard color coordinate and the comparative color coordinate .