<P> Part 2 was filmed back - to - back with Harry Potter and the Deathly Hallows--Part 1 from 19 February 2009 to 12 June 2010, with reshoots for the epilogue scene taking place at Leavesden Film Studios on 21 December 2010 . Director David Yates, who shot the film with director of photography Eduardo Serra, described Part 2 as "operatic, colourful and fantasy - oriented", a "big opera with huge battles ." </P> <P> Originally set for a single theatrical release, the idea to split the book into two parts was suggested by executive producer Lionel Wigram due to, what David Heyman called, "creative imperative". Heyman initially responded negatively to the idea, but Wigram asked, "No, David . How are we going to do it?". After rereading the book and discussing it with screenwriter Steve Kloves, he agreed with the division . </P> <P> In an interview with Architectural Digest, production designer Stuart Craig remarked on creating sets for Part 2 . Of the Gringotts Wizarding Bank, he said, "our banking hall, like any other, is made of marble and big marble columns . And it has great strength . The fact that the goblins are the bankers and tellers at the counter helps that feeling of grandeur and solidity and the big proportions . That was part of the fun of the set: we exaggerated the size of it, we exaggerated the weight of it, and we even exaggerated the shine of the marble ." About the multiplication of treasure in one of the bank's vaults, he noted, "We made literally thousands of pieces for it and vacuum metallised them to be shiny gold and silver . John Richardson, the special effects supervisor, made a floor that was capable of rising on different levels, so there was kind of a physical swelling of the treasure on it ." </P> <P> Craig spoke about the Battle of Hogwarts to Art Insights Magazine, saying that "the great challenge is the destruction of Hogwarts . The sun rising behind the smoke...the massive remains of destroyed walls, the entrance hall, the entrance of the Great Hall, part of the roof of the Great Hall completely gone, so yeah . A big challenge there and an enjoyable one really--maybe it helped me and the guys in the art department sort of prepare for the end...we demolished it before we had to strike it completely ." When asked about the King's Cross scene near the end of the film, Craig said, "We experimented a lot, quite honestly . I mean it was quite a protracted process really but we did experiment the sense of it being very burnt out very very kind of white--so we experimented with underlit floors, we experimented with different kind of white covering everything: white paint, white fabric, and the cameraman was involved in how much to expose it, and a series of camera tests were done, so we got there but with a great deal of preparation and research ." </P>

When did the 8th harry potter movie come out