Harry Potter: The Complete 8-film Collection [DVD]  (DVD Cover May Vary)
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In a 2010 interview, David Heyman briefly explained the book-to-film transition. He commented on Rowling's involvement in the series, stating that she understood that "books and films are different" and was "the best support" a producer could have. Rowling had overall approval on the scripts, which were viewed and discussed by the director and the producers. Heyman also said that Kloves was the "key voice" in the process of adapting the novels and that certain aspects from the books needed to have been excluded from the scripts due to the filmmakers' decision to keep the main focus on Harry's journey as a character, which would ultimately give the films a defined structure. Heyman mentioned that some fans "don't necessarily understand the adaptation process" and that the filmmakers would have loved to "have everything" from the books in the films but noted that it was not possible since they had "neither time nor cinematic structure" to do so. He finished by saying that adapting a novel to the screen is "a really considered process". 
Harry Potter: Complete 8-film Collection | Harry Potter DVD
Steve Kloves was selected to write the screenplay for the first film. He described adapting the book as "tough" since it did not "lend itself to adaptation as well as the next two books". Kloves was sent a "raft" of synopses of books proposed as film adaptations, with Harry Potter being the only one that jumped out at him. He went out and bought the book, becoming an instant fan. When speaking to Warner Bros. he stated that the film had to be British and true to the characters.  David Heyman was confirmed to produce the film.  Rowling received a large amount of creative control for the film, an arrangement that Columbus did not mind. a b "Harry Potter and the Deathly Hallows Part 2 (2011)". Box Office Mojo. Archived from the original on 10 December 2011 . Retrieved 10 December 2011. Visitor Information: Harry Potter". Christ Church, Oxford. Archived from the original on 18 December 2014 . Retrieved 5 June 2010.
Warner Harry Potter: The Complete 8-film Collection [4K Ultra
Etan Vlessing (3 October 2016). " 'Harry Potter' Movies Returning to Imax Theaters for One Week". The Hollywood Reporter. Archived from the original on 9 September 2020 . Retrieved 3 October 2016. Schmitz, Greg Dean. "Harry Potter and the Sorcerer's Stone (2001)". Yahoo!. Archived from the original on 15 December 2007 . Retrieved 30 May 2007.He said, "In the early days, every time you saw the exterior of Hogwarts, it was a physical miniature", which was made by craftsmen and occupied a large sound stage.   "We ended up with a profile of how Hogwarts looked, a skyline that actually I didn't design, and it wasn't always satisfactory, and as all the novels got written and movies got made there were new requirements [for buildings]. The [Astronomy Tower] definitely wasn't there originally, and so we were able to add that substantial piece. And in the last film, we needed an arena for the battle for Hogwarts – the big courtyard outside doubled in size, and if you look at the first movie it wasn't there at all. There were quite some liberties taken with the continuity of Hogwarts."  In the last film, Craig used a digital model instead of a miniature to "embrace the latest technology". 
Harry Potter: Film Vault: The Complete Series: Special Harry Potter: Film Vault: The Complete Series: Special
DH Part 1 and 2 in 3D and 2D". Snitchseeker.com. 19 November 2010. Archived from the original on 7 August 2010 . Retrieved 2 March 2011.
a b Frankel, Daniel (17 November 2010). "Get Ready for the Biggest 'Potter' Opening Yet". The Wrap. Archived from the original on 20 November 2010 . Retrieved 21 November 2010. Warner Bros. Pictures mentions J. K. Rowling as producer". Business Wire. 20 September 2010. Archived from the original on 27 December 2010 . Retrieved 2 March 2011.