 Sinha started his career in 1946, as a sound engineer with New Theatres film production house in Kolkata, then in 1950 left for England where he worked at Pinewood Studios for next two years, before returning home to start his six decade long career in Indian cinema, making films in Bengali, Hindi and Oriya languages, straddling genres from social realism, family drama, labor rights, to children's fantasy films.He was one of the acclaimed filmmakers of Parallel Cinema movement of India.Sinha was born in Kolkata, West Bengal.