A new bengali film titled Apur Panchali tries to explore that. The trailer and poster is just out, and it looks interesting. Have a look. Though the trailer doesn’t have subtitles yet.
The film is directed by Kaushik Ganguly, and stars Parambrata Chatterjee, Parno Mitra, Ardhendu Banerjee, Gaurav Chakraborty & Ritwik Chakraborty.
Some more info on the film (from TOI article) – Talking about Apur Panchali, Kaushik said, “The film is inspired by the real-life story of Subir Banerjee, the child actor, who played Apu in Ray’s Pather Panchali. Despite being one of the most celebrated child actors in the industry once, nobody cares to find out what he is doing now; no one remembers him. My film is a take on that. The USP of the film is the subject which has never been explored in Bengali cinema before. Interestingly, Subir’s life has an uncanny resemblance to what Ray had depicted in The Apu Trilogy. And that’s what inspired me to make this film. Albeit Pather Panchali was Subirda‘s first and last film, but if you study the man’s life, you’d sit and ponder if Satyajit Ray had written The Apu Trilogy keeping Subirda in mind. Having said that, I’d like to make it clear that my film is a work of fiction, and not Subir Banerjee’s biography.”
– To read the full article, click here.
– More about the film here.
F.i.g.h.t C.l.u.b 
In that case you should read feluda series. I think Satyajit ray did justice to the films based on him: http://sanchitasarkar.wordpress.com/2013/03/17/the-complete-adventures-of-feluda-volume-2/