The Parent Trap (1961 film) Mitch talks about what their life was like when they were married. They realize they still love each other, and do not want to grow into a couple of old and lonely people. They share a kiss, and decide to remarry. The film originally called for only a few trick photography shots of Hayley Mills in scenes with herself; the bulk of the film was to be shot using a body double. The film used Disney's proprietary sodium vapor process for compositing rather than the usual chroma key technique. When Walt Disney saw how seamless the processed shots were, he
The Parent Trap (1961 film) ordered the script reconfigured to include more of the special effect. Disney also wanted Mills to appear on camera as much as possible, knowing that she was having growth spurts during filming. The film was shot mostly at various locales in California. The summer camp scenes were filmed at Bluff Lake Camp (then owned by the Pasadena YMCA, now by Habonim Dror's Camp Gilboa) and the family camping scenes later in the movie at Cedar Lake Camp, both in the San Bernardino Mountains near the city of Big Bear Lake in Southern California. The Monterey scenes were filmed in various