When producing a new series of artworks, how does the artist form an art concept? In order to capture this formation process, we conducted a case study of a contempo rary artist. We interviewed the artist about his creation process once per three weeks for about ten months. During that period, in order to develop his art concept, the artist first drew his ideas on paper and then took photographs to collect visual infor mation. After these two phases, he began the hands-on creation of the artworks. As he discovered the core part of his new art concept during the photography phase, we analyzed the photographs and interview data collected during this phase. The results show that the visual information collected through the photography led to his discovery of sub-components of his art concept.