The method makes it possible to measure light distribution with a digital camera and raise the light effect, not using complex and expensive facilities.

When the value of illumination from the brightest angle is measured, that from other angles and a change in light intensity come out accurately. And the light distribution from one or more illuminators is also measured quickly without any light sensors.

The method has already been applied to the Tower of the Juche Idea, People's Palace of Culture and other edifices for light decoration.