Pirates of the Caribbean: On Stranger Tides appearance of "Old Bill", the pirate who tries to share his rum with a cat, was also filmed but cut. Pintel and Ragetti were originally supposed to make an appearance, but director Rob Marshall opted out of the idea as he feared their roles would be cut. Cook resigned in September 2009 after working for Disney for over 38 years. Depp's faith in "Pirates of the Caribbean: On Stranger Tides" was somewhat shaken after the resignation, with Depp explaining that "There's a fissure, a crack in my enthusiasm at the moment. It was all born in that office". Depp also
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