<P> McFeely said that the idea of basing a film on "Civil War" had "been on and off the table for a while" at Marvel Studios, explaining, "it's a challenge to do it and make sure that all the characters that we've established, and everyone's established in the MCU are serviced and sound correct . Because there's a difference between the characters in "Civil War", which was written in 2006, 2007 . The MCU doesn't exist (when it was written). There isn't a Robert Downey, Jr. or Chris Evans who has helped create the character (s) so we need to make sure that that template gets adjusted ". Joe Russo added that the "essence" of "Civil War" was used, such as "the concept of registration, the notion that heroes need to be either monitored or controlled because their power can be scary" being applicable . Anthony Russo expanded, "in a lot of ways (superhero registration) can be a political issue, and we didn't want the conflict of the movie to solely exist on that level . We wanted to figure out very personal reasons why everyone's relationship to this idea of registration is going to become complicated . That's what the relationship between Steve and Bucky allowed us to do, to get very personal in terms of why people would lean one way or the other ." Executive producer Nate Moore added that "it felt like it was kind of the right time" to adapt "Civil War" given The Avengers, plus many of the Phase Two films (Thor: The Dark World, The Winter Soldier, and Avengers: Age of Ultron), all dealt with "world - ending experiences . We felt like we had to tell the next step in that story, which is...what is the world's reaction?" </P> <P> In November 2014, Daniel Brühl joined the cast in an unspecified role, while Anthony Mackie and Frank Grillo were confirmed to return as Sam Wilson / Falcon and Brock Rumlow / Crossbones, respectively . Following the November 2014 hacking of Sony Pictures' computers, emails between Sony Pictures Entertainment co-chairman Amy Pascal and president Doug Belgrad were released stating that Marvel wanted to include Spider - Man (whose film rights are licensed to Sony) in the film, but talks between the studios concerning this were believed to have broken down . However, in February 2015, Sony Pictures and Marvel Studios reached a licensing deal for the use of Spider - Man in an MCU film, and reports indicated that the character would indeed appear in Civil War . The Russos stated they were lobbying for months to include the character in the film . In January 2015, Mackie revealed that, in addition to Atlanta, filming locations would include Puerto Rico and Berlin, while the Russo brothers confirmed that Scarlett Johansson would return in the film as Natasha Romanoff / Black Widow . Editor Jeffrey Ford, who worked on The Winter Soldier, also signed on for Civil War . In March 2015, Jeremy Renner was revealed to be reprising his role as Clint Barton / Hawkeye . The next month, it was revealed that the film would be converted to 3D in post-production, and that Brühl would be playing Helmut Zemo . Additionally, Elizabeth Olsen revealed she would reprise her role in the film as Wanda Maximoff / Scarlet Witch . </P> <P> Principal photography began on April 27, 2015, in Fayette County, Georgia at Pinewood Atlanta Studios, under the working title Sputnik . Other filming locations in the Atlanta metropolitan area included the Buckhead district of Atlanta; the Peachtree Christian Church in Midtown Atlanta; Downtown Atlanta, including an area near Philips Arena known as The Gulch, which served as the market in Lagos; Norcross, Georgia; Porsche's headquarters in Atlanta at Aerotropolis Atlanta, which served as the Avengers' headquarters in the film; and the Atlanta Civic Center, which served as the IFID (Institute for Infectious Diseases) laboratory in Lagos; the latter's interiors doubled as MIT, and a third part was used for a Berlin location . Trent Opaloch served as director of photography, while Chad Stahelski, David Leitch, and Spiro Razatos were second unit directors . </P> <P> In early May, Marvel announced that Martin Freeman was cast in an unspecified role, while also reprising roles in the film would be Paul Bettany as Vision, Don Cheadle as James Rhodes / War Machine, Paul Rudd as Scott Lang / Ant - Man, Emily VanCamp as Sharon Carter, and William Hurt as Thaddeus "Thunderbolt" Ross, respectively . Samuel L. Jackson, who appeared as Nick Fury in the two previous Captain America films, said he was "surprised" to discover that he would not be in Captain America: Civil War, after "the Russo Brothers told (him he) was ." Moore stated that Fury was not included "because he didn't add anything to the Civil War story they were telling", while Markus stated that they did not want him to choose any particular side because "that's not his place in the universe". On each of the character's ties to the plot, Anthony Russo said that each character was examined on a personal level to see how they would respond to the idea of registration . On the portrayal of each character, Joe Russo said that he and his brother had strong "emotional" and "psychological connection (s) to (these) characters" as children, adding, "We want to reach into that and understand what elementally motivated you to love the character . That's what we try to bring out in the characters now ." He also mentioned that they were "trying to honor the feeling of naturalism and to honor the feeling of reality (with the film)." </P>

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