With a green screen, this would have created a nightmare of green spill. With virtual production, the armour would reflect the graphics on the LED screens, making the setting appear more realistic.

Will the fallout from Batman's newfound domination mean more stark reality for the future of comic-book movies, or the death of the green screen?

Behind-the-scenes clips show how extensively green screen was used to create the film noir look of Robert Rodriguez and Frank Miller's "Sin City: A Dame to Kill For" ...