In mid-October 2014, Marvel's vice president of post-production and special effects Victoria Alonso revealed that the number of special effects shots in "Avengers 2: Age of Ultron" will exceed 3,000. In order to produce more than 3,000 special effects shots, Marvel put the post-production of the film in 12 post-production companies in 5 to 7 different countries. Marvel will use some of the latest special effects technology in the film, such as high dynamic range photography ().
In addition to the visual effects of the film, the sound effects are also the focus of the crew. With the continuous efforts of Victoria Alonso and the later company, they have developed a new set of sound design, collection and synthesis system, which can more comprehensively produce the sound effects in the film.
