Pirates of the Caribbean: On Stranger Tides "Pirates of the Caribbean" ride that inspired the film series. Many of the film's stars were in attendance. Two other early screenings followed, one in Moscow on May 11, and another during the Cannes International Film Festival on May 14. The international release dates fell within May 18 and 20, with opening dates in the United Kingdom on May 18, in Australia on May 19, and in North America on May 20. The film was released on a then-record 402 IMAX screens, 257 screens in North America, and 139 in other territories. The total number of theaters was 4,155 in
Pirates of the Caribbean: On Stranger Tides at the 007 Stage on Pinewood. "On Stranger Tides" employed 1,112 shots of computer-generated imagery, which were done by ten visual effects companies. Cinesite visual effects supervisor Simon Stanley-Clamp claimed that the most difficult part was doing the effects in 3D: "Rotoscoping is tricky. Cleaning up plates is double the work, and tracking has to be spot on." The lead companies, with over 300 effects each, were Industrial Light & Magic—responsible for, among others, the mermaids and most water effects—and Moving Picture Company, who created digital ships and environment extensions, such as changing weather and designing cliffs and waterfalls. Filming