The first half of the story was originally planned to be released in the format, plans that were ultimately shelved.
But now he has reassured fans that the film will use 3D only in ways that benefit the story.
He told SFX: “The way [director] David Yates is approaching 3D is he’s trying to approach it from a character and story point of view. Trying to use the sense of isolation, of separation that sometimes 3D gives you, to heighten that at appropriate amounts. So we’re approaching it in a storytelling way.”
He continued: “In terms of Deathly Hallows: Part 1, we just ran out of time and in discussion with the studio, we told them that we couldn’t preserve the quality and make the movie the way we wanted to deliver it if we made it in 3D. And they understood, and they were supportive.
“Funnily enough I think that this last film will benefit more from the 3D than the first one would have. It’s more epic and operatic.”
Harry Potter And The Deathly Hallows: Part 2 is released in the UK on July 15.