Intro

Bringing The Wizard of Oz to Sphere meant re-imagining a film shot nearly a century ago for a cinema screen, on a canvas of 160,000 square feet. As lead colorist, I worked to keep the character of the original, that unmistakable Technicolor warmth, while adapting it for a format its filmmakers could never have imagined.

The challenge of scale

Every decision had to hold up at true size. A matte edge that reads clean on a reference monitor can show up as a hundred-foot flaw on the media plane. Color that feels balanced at normal viewing distance can shift in saturation and brightness once it's wrapped around an audience.

Technicolor made that harder. On a dome, bright or saturated images at the top of the screen spill light onto the screen in front of you, lifting the blacks and washing out the color. A few scenes in Oz have bright blue skies, so in those we added contrast and brought the gamma down on the front of the screen to keep the look consistent across the whole dome.

The Technicolor moment

The most famous moment in the film is Dorothy stepping out of sepia Kansas into the color of Oz. In 1939 it was pure magic, and we had to make it feel just as magical at Sphere.

It took many tests to get right. We had to balance not just the saturation of the incoming color, but its brightness too: a sudden burst of bright, saturated color fills the dome with light and spills back across the screen through cross talk. Getting that transition to land took careful work on both color and cross talk, so the reveal hits the audience the way it hit audiences in 1939.