Robert Wise shot the film in black and white because he loved the depth and rich atmospheric quality of black and white for this genre of film and felt it would be perfect to enhance the moody psychological quality of the story. In addition, the studio contract specified the film must be shot in black and white.
Dr. John Markway:
An evil old house, the kind some people call haunted, is like an undiscovered country waiting to be explored. Hill House had stood for 90 years and might stand for 90 more. Silence lay steadily against the wood and stone of Hill House, and whatever ...
Near the end, Dr. Markway points to a spot of damage on a tree caused by Hugh Crane's carriage. Trees continuously grow new layers of wood each year. There's no way any damage would still be visible 90 years after the carriage was wrecked.
The original cut of movie (shown 24/9/03 at Filmhouse, Edinburgh) has several differences from the general release print -
English
$1,400,000 (estimated)
$742