Question: Why did Christopher Nolan use IMAX cameras for much of the filming of The Dark Knight Rises?
About the article "The Dark Knight Rises", section "Abstract".

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Some recent features have employed IMAX cameras for select scenes, however no full-length feature film has yet been shot entirely using IMAX cameras due to the numerous difficulties presented with the format – the cameras are much larger and heavier than standard cameras and as they are noisier it makes dialogue recording difficult.
The cameras have short film loads ranging from 30 seconds to two minutes and the cost of the film stock is much greater than standard 35mm film.
"The Dark Knight" features six sequences (a total of 30 minutes) shot using IMAX.
According to the film's press notes, this was the "first time ever that a major feature film has been even partially shot using IMAX cameras".
Even before "Dark Knight", Nolan had wanted to shoot a film in the IMAX format, and he also used it for quiet scenes which pictorially he thought would be interesting.
Nolan said that he wished that it were possible to shoot the entire film in IMAX: "if you could take an IMAX camera to Mount Everest or outer space, you could use it in a feature movie."
In addition, Nolan chose to edit some of the IMAX sequences using the original camera negative, which by eliminating generation loss, raised the film resolution of those sequences up to 18 thousand lines.
When the film opened in 94 IMAX venues in 2008, all of them were sold out for the opening weekend.
A year later, director Michael Bay was inspired by IMAX's use in "The Dark Knight" to feature big-screen sequences in '.
The film's co-writer Roberto Orci suggested that the IMAX footage would be 3D, but Bay later said that considering himself an "old school" filmmaker, he found 3D gimmicky and added that shooting in IMAX was easier than using stereoscopic cameras.
The IMAX version of the film, in the end, contained almost ten minutes of IMAX-filmed footage out of the two and a half hour film.
Bay later partially filmed the third Transformers film, ' in 3D but without IMAX.
Two years later, Brad Bird's "" had approximately 30 minutes of footage shot using IMAX cameras.
Bird believed that using IMAX format would bring back "a level of showmanship" to the presentation of Hollywood films, which he believes the industry has lost due to its emphasis on screening films in multiplexes as opposed to grand theaters, and vetoing "first runs" in favor of wider initial releases.
He also added that the IMAX format offered the viewer more immersion than digital 3D due to its brighter, higher quality image, which is projected on a larger screen, without the need for specialised glasses.
"Ghost Protocol" opened on December 16, 2011, in almost 500 IMAX venues worldwide a week before its wide release where it earned third place in the box office and $12 million dollars.
Like with "The Dark Knight", Christopher Nolan decided to film sequences of the sequel, "The Dark Knight Rises", in 15/70mm IMAX.
Nolan elected not to film in 3-D and stated that he intends to focus on improving image quality and scale using the IMAX format.
In a Hollywood record, "The Dark Knight Rises" featured over an hour of footage shot in IMAX (in comparison, "The Dark Knight" contained less than 30 minutes.)
But because of the considerable noise made by IMAX cameras, 35mm and 70mm cameras had to be used for shooting the film's dialogue scenes, and dialogue had to be dubbed when shot with IMAX cameras.
Chairman and president of the IMAX Corporation Greg Foster stated that IMAX plans to run the film in its theaters for two months, despite only being contractually committed to run the film for two weeks in some theaters.J.
J. Abrams' "Star Trek Into Darkness", Francis Lawrence's ', and Christopher Nolan's "Interstellar" are recently released or upcoming films to have sequences filmed in IMAX.
Michael Bay's ' meanwhile, will be the first feature film to be shot using digital IMAX 3D cameras. 
Nolan wanted the story for the third and final installment to keep him emotionally invested.
"On a more superficial level, I have to ask the question," he reasoned, "how many good third movies in a franchise can people name?"
He returned out of finding a necessary way to continue the story, but feared midway through filming he would find a sequel redundant.
"The Dark Knight Rises" is intended to complete Nolan's "Batman" trilogy.
By December 2008, Nolan completed a rough story outline, before he committed himself to "Inception".
In February 2010, work on the screenplay was commencing with David S. Goyer and Jonathan Nolan.
When Goyer left to work on the "Superman" reboot, Jonathan was writing the script based on the story by his brother and Goyer.
Tom Hardy was cast as Bane and Anne Hathaway plays Selina Kyle.
Joseph Gordon-Levitt was cast as John Blake, and Marion Cotillard was cast as Miranda Tate.
Filming began in May 2011 and concluded in November.
Nolan chose not to film in 3-D but, by focusing on improving image quality and scale using the IMAX format, hoped to push technological boundaries while nevertheless making the style of the film consistent with the previous two.
Nolan had several meetings with IMAX Vice-President David Keighley to work on the logistics of projecting films in digital IMAX venues.
"The Dark Knight Rises" featured more scenes shot in IMAX than "The Dark Knight".
Cinematographer Wally Pfister expressed interest in shooting the film entirely in IMAX.
Upon release, "The Dark Knight Rises" received a positive critical response and was successful at the box office, going on to outgross its predecessor and become the ninth-highest-grossing film of all time grossing over $1.08 billion.
However, unlike its predecessors, the film was not nominated for any Oscars during its year of eligibility at the 85th Academy Awards, much to the surprise of film industry insiders. 
During location scouting in December 2010, Nolan began searching for locations such as India, Romania, and Michigan.
According to the "Romania Insider", Nolan was interested in Bucharest's historical centers, Edgar Quinet Street, the Palace of the Parliament, and the Turda salt mine.
The film had an estimated budget of $250–300 million, coming down to about $230 million after tax credits.
Nolan elected not to film in 3-D, but instead stated that he intended to focus on improving image quality and scale using the IMAX format.
"The Dark Knight Rises" featured over an hour of footage shot in IMAX (by comparison, "The Dark Knight" contained 28 minutes).
Nolan had several meetings with IMAX Vice-President David Keighley to work on the logistics of projecting films in digital IMAX venues.
Wally Pfister had expressed interest in shooting the film entirely in IMAX, but because of the considerable noise made by IMAX cameras, 35mm and 70mm cameras had to be used for shooting the film's dialogue scenes, as dialogue had to be dubbed when shot with IMAX cameras.
Chairman and president of the IMAX Corporation Greg Foster stated that IMAX plans to run the film in its theatres for two months, despite only being contractually committed to run the film for two weeks.
Nolan also bypassed the use of a digital intermediate for the film, resulting in less manipulation of the filmed image and higher film resolution.
Filming was scheduled to start in May and conclude in November 2011.
Principal photography commenced on May 6, 2011, in Jodhpur, India at the Mehrangarh Fort before moving to Pittsburgh, where it operated under the working title "Magnus Rex" to reduce the visibility of the production.
Shooting locations within the city included Heinz Field, the site of an American football game, with members of the Pittsburgh Steelers playing the Gotham Rogues football team.
More than 11,000 extras were used to depict the shot sequence.
Filming in Pittsburgh also took place at the Mellon Institute and Software Engineering Institute at Carnegie Mellon University.
A letter sent out to residents and business owners detailing road closures revealed that the streets of the city would be featured "as the start of film".
9-1-1 operators were told to expect an increase in calls related to gun shots and explosions in the film's production.
The Pittsburgh leg of production wrapped after three weeks on August 21, 2011.
The next portion of the filming began in Los Angeles in late August and finished up on October 23 after nine weeks of filming.
New York and New Jersey were the next places of filming.
The Trump Tower replaced the Richard J. Daley Center as the location for the headquarters of Wayne Enterprises.
In November 2011, shooting shifted to Newark, New Jersey.
Newark City Hall and Military Park were among the locations used for filming.
Other shooting locations include London and Glasgow, the latter of which was used for "additional exterior filming".
Principal photography concluded on November 14, 2011.
The external waterfall scene at the end of the film was shot at Sgwd Henrhyd falls, on the edge of the Brecon Beacons National Park in Wales.
Production photos from filming in Pittsburgh showed a second Tumbler chassis after the first was destroyed, indicating that a new Batmobile would be in the film, following the destruction of the first in "The Dark Knight".
Further set photos revealed a "new vehicle" being transported to Wabash Tunnel, prompting speculation as to its nature.
In June 2011, Autoblog confirmed the presence of the new Lamborghini Aventador on the film set.
Several accidents occurred during the production of the film.
While filming at Wollaton Hall, Nottingham, a tractor-trailer crashed into the main entrance, though no one was injured.
A stuntman parachutist later crashed through the roof of a home in Cairngorm Gliding Club, Feshiebridge in Scotland, and became wedged there after a failed landing during a skydiving stunt; he was not seriously injured.
While filming scenes in Pittsburgh, Hathaway's stunt double crashed into an IMAX camera while filming a sequence that required her to ride a Batpod down a flight of stairs during a riot.
There were no injuries, but the camera was destroyed.
A second accident took place in Pittsburgh when the truck carrying the then-unidentified vehicle later termed "The Bat" went off-course and crashed into a lighting array, damaging the model of the aircraft.
Production was delayed while the model was repaired.
Shortly before Christmas of 2011, Christopher Nolan invited many of America's most prominent directors, including Edgar Wright, Michael Bay, Bryan Singer, Jon Favreau, Eli Roth, Duncan Jones and Stephen Daldry, to Universal CityWalk's IMAX theatre for a private screening of the first six minutes of "The Dark Knight Rises", which had been shot on IMAX film and edited from the original camera negative.
Nolan, feeling that the use of film stock in cinema is currently being phased out due to the introduction of digital cinematography and projection, used this screening to make a case for the continued use of film, which he asserts still offers superior image quality to any digital format, and warned the filmmakers that unless they continued to assert their choice to use film in their productions, they may eventually lose it as an option.
Nolan explained; "I wanted to give them a chance to see the potential, because I think IMAX is the best film format that was ever invented.
It's the gold standard and what any other technology has to match up to, but none have, in my opinion.
The message I wanted to put out there was that no one is taking anyone's digital cameras away.
But if we want film to continue as an option, and someone is working on a big studio movie with the resources and the power to insist film, they should say so.
I felt as if I didn't say anything, and then we started to lose that option, it would be a shame.
When I look at a digitally acquired and projected image, it looks inferior against an original negative anamorphic print or an IMAX one."
The Dark Knight Rises is a 2012 British-American epic superhero film directed by Christopher Nolan, who co-wrote the screenplay with his brother Jonathan Nolan and the story with David S. Goyer.
Featuring the DC Comics character Batman, the film is the final installment in Nolan's "Batman" film trilogy, and it is the sequel to "Batman Begins" (2005) and "The Dark Knight" (2008).
Christian Bale reprises the lead role of Bruce Wayne/Batman, with a returning cast of his allies: Michael Caine as Alfred Pennyworth, Gary Oldman as James Gordon, and Morgan Freeman as Lucius Fox.
The film introduces Selina Kyle (Anne Hathaway), a sly, morally ambiguous cat burglar, and Bane (Tom Hardy), a mercenary bent on destroying Gotham City.
Drawn back into action by new threats facing the city, an older Bruce Wayne is forced to come out of retirement and become Batman once again.
Christopher Nolan was initially hesitant about returning to the series for a second time, but agreed to come back after developing a story with his brother and Goyer that he felt would conclude the series on a satisfactory note.
Nolan drew inspiration from Bane's comic book debut in the 1993 "" storyline, the 1986 series "The Dark Knight Returns", and the 1999 storyline "No Man's Land".
Filming took place in various locations, including Jodhpur, London, Nottingham, Glasgow, Los Angeles, New York City, Newark, and Pittsburgh.
Nolan used IMAX cameras for much of the filming, including the first six minutes of the film, to optimize the quality of the picture.
A variation of the Batplane termed "The Bat", an underground prison set, and a new Batcave set were created specifically for the film.
As with "The Dark Knight", viral marketing campaigns began early during production to help promotion.
When filming concluded, Warner Bros. refocused its campaign: developing promotional websites, releasing the first six minutes of the film, screening theatrical trailers, and sending out information regarding the film's plot.
"The Dark Knight Rises" premiered in New York City on July 16, 2012.
The film was released in Australia and New Zealand on July 19, 2012, and in North America and the United Kingdom on July 20, 2012.
Upon release it received a favorable critical response and grossed over $1.081 billion worldwide.
It is currently the ninth-highest-grossing film of all time, the third-highest-grossing film of 2012, and the third-highest-grossing superhero film of all time.
While scouting for shooting locations in October 2006, location manager Robin Higgs visited Liverpool, concentrating mainly along the city's waterfront.
Other candidates included Yorkshire, Glasgow, and parts of London.
In August 2006, one of the film's producers, Charles Roven, stated that its principal photography would begin in March 2007, but filming was pushed back to April.
For its release in IMAX theaters, Nolan shot four major sequences in that format, including the Joker's opening bank robbery and the car chase midway through the film, which marked the first time that a feature film had been even partially shot in the format.
The cameras used for non-IMAX 35 mm scenes were Panavision's Panaflex Millennium XL and Platinum.
For fifteen years Nolan had wanted to shoot in the IMAX format, and he also used it for "quiet scenes which pictorially we thought would be interesting."
The use of IMAX cameras provided many new challenges for the filmmakers: the cameras were much larger and heavier than standard cameras, and produced noise which made recording dialogue difficult.
In addition, the cameras had short film loads ranging from 30 seconds to two minutes and the cost of the film stock was much greater than standard 35mm film.
Nevertheless, Nolan said that he wished that it were possible to shoot the entire film in IMAX: "if you could take an IMAX camera to Mount Everest or outer space, you could use it in a feature movie."
In addition, Nolan chose to edit some of the IMAX sequences using the original camera negative, which by eliminating generation loss, raised the film resolution of those sequences up to 18 thousand lines.
Warner Bros. chose to film in Chicago for 13 weeks, because Nolan had a "truly remarkable experience" filming part of "Batman Begins" there.
Instead of using the Chicago Board of Trade Building as the location for the headquarters of Wayne Enterprises, as "Batman Begins" did, "The Dark Knight" shows Wayne Enterprises as being headquartered in the Richard J. Daley Center.
While filming in Chicago, the film was given the false title "Rory's First Kiss" to lower the visibility of production, but the local media eventually uncovered the ruse.
Richard Roeper of the "Chicago Sun-Times" commented on the absurdity of the technique, "Is there a Bat-fan in the world that doesn't know "Rory's First Kiss" is actually "The Dark Knight", which has been filming in Chicago for weeks?"
Production of "The Dark Knight" in Chicago generated $45 million in the city's economy and created thousands of jobs.
For the film's prologue involving the Joker, the crew shot in Chicago from April 18, 2007 to April 24, 2007.
They returned to shoot from June 9, 2007 to early September.
Noticeably, unlike "Batman Begins", less CGI was used to disguise Chicago.
Many recognizable locations were used in the film, like the Sears Tower, Navy Pier, 330 North Wabash, the James R. Thompson Center, Trump International Hotel and Tower, LaSalle Street, The Berghoff, Randolph Street Station, and Hotel 71.
An old Brach's factory was used as Gotham Hospital.
The defunct Van Buren Street post office doubles as Gotham National Bank for the opening bank robbery.
Several sequences, including one car chase, were shot on the lower level of Wacker Drive.
The Marina City towers also appear in the background throughout the movie.
Pinewood Studios, near London, was the primary studio space used for the production.
While planning a stunt with the Batmobile in a special effects facility near Chertsey, England in September 2007, technician Conway Wickliffe was killed when his car crashed.
The film is dedicated to both Ledger and Wickliffe.
The following month in London at the defunct Battersea Power Station, a rigged 200-foot fireball was filmed, reportedly for an opening sequence, prompting calls from local residents who feared a terrorist attack on the station.
A similar incident occurred during the filming in Chicago, when an abandoned Brach's candy factory (which was Gotham Hospital in the film) was demolished.
Filming took place in Hong Kong from November 6 to 11, 2007, at various locations in the CBD, including Hong Kong's tallest building at the time, the International Finance Centre, for the scene where Batman captures Lau.
The city's walled city of Kowloon influenced the Narrows in "Batman Begins".
The shoot hired helicopters and C-130 aircraft.
Officials expressed concern over possible noise pollution and traffic.
In response, letters sent to the city's residents promised that the sound level would approximate noise decibels made by buses.
Environmentalists also criticized the filmmakers' request to tenants of the waterfront skyscrapers to keep their lights on all night to enhance the cinematography, describing it as a waste of energy.
Cinematographer Wally Pfister found the city officials a "nightmare," and ultimately Nolan had to create Batman's jump from a skyscraper digitally.