'Tamasha' a challenging film: Imtiaz Ali

Director Imtiaz Ali says his upcoming Ranbir Kapoor-starrer romantic drama '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. 'Rockstar' was a film we did and enjoyed. This ('Tamasha') has been challenging. We got new things that we need to express through performances, the film and poetry," 43 years, Imtiaz, said.