Over the course of a 50-year career, Wim Wenders has worked with such international luminaries as Mel Gibson, Alicia Vikander and rock band U2.

Yet the German film-maker witnessed global recognition on a whole new level when he accepted an invitation from the Vatican to make a film about the Pope.

Combining interviews with the pontiff with footage of his travels, Pope Francis: A Man of His Word shows its subject commanding audiences far greater than any star could muster.

So did Wenders see any similarities with some of his other collaborators during the four afternoons he spent conversing with His Holiness?

"The Pope has the same presence as some of the greatest movie stars I've worked with," says the director of Paris, Texas, Wings of Desire and Buena Vista Social Club.

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