Mr. Kanchan Dey is the ex-photographer, Photo Division, Govt. of India. This shot was taken at the fifth day of five days duration '10th International Photographic Conference' that organised by the Photographic Association of Dum Dum (PAD) in collaboration with the Birla Industrial & Technological Museum (BITM), National Council of Science Museums, Ministry of Culture, Govt. of India at the BITM, Kolkata from 23-27 January, 2014.