“Photosynthesis” is one of my exploration plan under my observation project of the society. It explores the relationship between urban dynamism and artificial light source. On 'Photosynthesis', I tried to raise questions and ventured into the value system of our habitual world as established by the lightings at night and also the behavioral norms of an individual (a person). The cool and glamorous night view as seen in the images, I tried to find out how the prevailing society allows the lightings to lead an individual at night when developing one's living experience. However, what is hidden under the stil l images and landscape, is the re-recognition and depiction of an ordinary phenomenon in a city at work.