The Making of Alice in Wonderland

Alice in Wonderland was filmed almost entirely in front of a green screen. According to Wikipedia, Johnny Depp actually wore lavender colored contact lenses to avoid getting sick. Much of the cast and crew felt nauseated by being surrounded by the green screens for hours on end. The film was shot in conventional 2D and was later converted to 3D, earning the criticism of James Cameron, who advocated shooting in 3D.

Promotional stills released from The Visual Guide to Alice in Wonderland reveal that only the actors and costumes were real, and the entire setting was CGI. This resulted in a relatively short shooting schedule, 40 days in total. The sequence when Alice falls through the roof and sits upside down was shot right-side up, with a tall wig replicating the look of hanging hair. The deck of card and chess piece soldiers were portrayed by motion capture actors, while Cheshire Cat was all CGI. A veteran commerical actor was hired to preform the Fudderwacken sequence.

Johnny Depp said the character of the Hatter was easy to portray, as it just came out during filming. His casting and that of Helena Bonhome Carter was obvious, as Depp has been in many Burton films, and Carter is the mother of Burton's children. The film's storyline is self contained, thus a sequel would be unnecessary, but welcomed nonetheless.