Santi Prasad Choudhury (1929 - 1982) was a documentary film maker and a close friend of Nirmal Chandra Kumar. He was one of the pioneers of documentary film making in India. He visited Kumar often to refer to books for facts to make his documentaries undisputed. He has directed more than 50 documentary films, many of them winning awards and has directed several Feature Films among which many won awards, to mention Heerer Prajapati filmed in 1958 to win Best Children's Film.
He was a close friend of Satyajit Ray and an unknown fact about Santi Prasad is that he was the Assistant Screenplay Writer of Satyajit Ray’s Jalsaghar, The Music Room filmed in 1958. Incidentally Santi Chowdhury decorated the stall of the film Aparajito by Satyajit Ray, in Venice Film Festival. The 50s was a time of crisis in the country and distribution of documentary films became a problem. It is at this time that he started an establishment, Image India to distribute films.