James Mason & Sue Lyon in Lolita (1962, dir. Stanley Kubrick)
Q. In your last genuinely contemporary film, Lolita, you were  frustrated in your efforts to make the movie as erotic as the novel, and  there was some criticism that the girl was too old to play the nymphet  of the novel. 
Kubrick: She was actually just the right age. Lolita  was twelve and a half in the book; Sue Lyon was thirteen. I think some  people had a mental picture of a nine-year-old. I would fault myself in  one area of the film, however; because of all the pressure over the  Production Code and the Catholic Legion of Decency at the time, I  believe I didn’t sufficiently dramatize the erotic aspect of Humbert’s  relationship with Lolita, and because his sexual obsession was only  barely hinted at, many people guessed too quickly that Humbert was in  love with Lolita.
Whereas in the novel this comes as a discovery at the end, when she  is no longer a nymphet but a dowdy, pregnant suburban housewife; and  it’s this encounter, and his sudden realization of his love, that is one  of the most poignant elements of the story. If I could do the film over  again, I would have stressed the erotic component of their relationship  with the same weight Nabokov did. But that is the only major area where  I believe the film is susceptible to valid criticism.
-excerpted from The Film Director as Superstar by Joseph Gelmis

James Mason & Sue Lyon in Lolita (1962, dir. Stanley Kubrick)

Q. In your last genuinely contemporary film, Lolita, you were frustrated in your efforts to make the movie as erotic as the novel, and there was some criticism that the girl was too old to play the nymphet of the novel.

Kubrick: She was actually just the right age. Lolita was twelve and a half in the book; Sue Lyon was thirteen. I think some people had a mental picture of a nine-year-old. I would fault myself in one area of the film, however; because of all the pressure over the Production Code and the Catholic Legion of Decency at the time, I believe I didn’t sufficiently dramatize the erotic aspect of Humbert’s relationship with Lolita, and because his sexual obsession was only barely hinted at, many people guessed too quickly that Humbert was in love with Lolita.

Whereas in the novel this comes as a discovery at the end, when she is no longer a nymphet but a dowdy, pregnant suburban housewife; and it’s this encounter, and his sudden realization of his love, that is one of the most poignant elements of the story. If I could do the film over again, I would have stressed the erotic component of their relationship with the same weight Nabokov did. But that is the only major area where I believe the film is susceptible to valid criticism.

-excerpted from The Film Director as Superstar by Joseph Gelmis