Why was Sandip Ray hesitant to bring his father's character, Professor Shonku, to the screen?

In Sandeep Ray's cinematic portrayal of Shonku, veteran actor Dhritiman Chatterjee seems to have come alive straight from the pages of Satyajit's book ! On Dhritiman Chatterjee's 79th birthday, this video sheds light on the behind-the-scenes craftsmanship of the film adaptation of Professor Shonku in which he starred! The VFX production of this recent milestone in Bengali cinema was handled by Fourth Dimension Visual Effects Pvt Ltd!
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