"I had to learn some Bengali for the film as I am playing a woman who is half Bengali. There are some Bengali words in the film," Kalki told PTI.
Konkona is making her directorial debut with "A Death In The Gunj", which also stars Kalki, Ranvir Shorey, Vikrant Massey, Om Puri and Tanuja.
The film traces the journey of five individuals who are on a holiday.
It was shot extensively in McCluskieganj town, near Ranchi, which was once famous for its considerable population of Anglo-Indian community, but has gradually dwindled in numbers after the sixties.
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Born to French parents in Puducherry, which was once a French colony, the actress who is playing a 34-year-old woman called Mitali, said she could relate to her character because of the French connect.
The shooting of the film is over and it is now on the editing table.
The film is about a special relationship between two
people from different walks of life who befriend each other in a hospital, while nursing their respective comatose spouses.
On whether she is happy with the kind of roles being offered to her, the actress replied in the positive.
"I am happy, but it is very unpredictable. For nine months I can be without work as if I will never get work again," she said.
The actress, who also acts in theatres, has been writing poetries for her own from childhood, which she says help her organise thoughts and formulate her thinking process as an actor.
All unpublished so far, two of her poems include "An Ode to Coffee" and "Modern Life".
"It's all work in progress as I keep changing one or two lines later on," she said adding she is planning to attend the Bangalore Poetry Festival later this year.