Christopher Nolan's latest film, The Odyssey, is already making headlines. Shot entirely with IMAX 70mm cameras, it’s got a star-studded cast including Zendaya, Tom Holland, Robert Pattinson and Lupita Nyong'o. The epic has also had a huge box office opening, earning nearly $260 million worldwide - that makes it one of the year's biggest releases so far.

But not everyone is celebrating. From casting choices to its portrayal of Greek mythology, the film has sparked debate and criticism online. We speak to BBC Culture's Nicholas Barber to break down the controversy and explain why so many people are talking about it.

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