Captain America: The Winter Soldier The film featured extensive use of digital doubles. Russell Earl, ILM visual effects supervisor, said, "The character that we did the most work on was Falcon. We knew we were going to do CG wings. We also did some shots with wires and some with stunt doubles and head replacement. And we needed a very good digital double." Lola VFX, who worked on the pre-serum Steve Rogers scenes in this film and "Captain America: The First Avenger", also worked on shots featuring an elderly Peggy Carter. This involved digitally transposing the facial features of an elderly actress onto the face
Captain America: The Winter Soldier going to seem dirty and underhanded and shifty, and people won't be telling the truth." "Three Days of the Condor" in particular was used as the main source of the script structure, following the idea that the protagonist is being chased by a threat they, along with the audience, only discover halfway through the film. The writers felt this approach was similar to how Stan Lee reinvented Captain America in the 1960s and 1970s, with "the Captain dealing with all sorts of the same things that the country [was] dealing with–Vietnam, Watergate and all that stuff–so he gets to have