A challenging 'Tamasha' for Imtiaz Ali

New Delhi: Director Imtiaz Ali says his upcoming Ranbir Kapoor-starrer 'Tamasha' is a demanding film in terms of performances and story-telling.

The 'Highway' director is not bothered about people's expectations from the movie as it marks his second outing with Ranbir after their 2011 successful film 'Rockstar' because he feels 'Tamasha' has its own individuality and a new set of challenges.

"Expectations don't matter. This ('Tamasha') has been challenging. We got new things that we need to express through performances, the film and poetry," Imtiaz, said.

The 43-year-old writer-director, who is known for his poignant presentation of modern-day love stories, said he has been influenced by casual, light- hearted movies more than "meaningful cinema".

Ranbir Kapoor along with Imtiaz released lyricist Irshad Kamil's new book of poems here.

Imtiaz, Irshad's contribution immense in my career: Ranbir

Ranbir Kapoor said director Imtiaz Ali and lyricist Irshad Kamil, with whom he worked in 2011 hit 'Rockstar', have contributed a lot to his success in Bollywood.

The 32-year-old actor was lavishly praised by fans and critics for his intense performance of a college student, whose turbulent love story turns him into a rockstar in the romantic saga.

Ranbir is again collaborating with the duo in his upcoming movie 'Tamasha', which also stars his 'Yeh Jawani Hai Deewani' co-star Deepika Padukone.

"Their contribution to the film industry is well known and to my career it has been immense. I cherish working with Imtiaz. He and Irshad are responsible for what I have achieved in Bollywood with 'Rockstar',” he said.