IMAX 70mm vs. Digital IMAX: Understanding the Differences in Cinema Formats

Understanding Film Formats

Many films are shot digitally for cost and convenience, but some filmmakers prefer film. While 35mm is common, big-budget projects like Oppenheimer and No Time to Die use 70mm film, also known as Super Panavision 70mm. The highest quality film format is IMAX 70mm, used in films such as The Odyssey, Dune: Part 3, and Sinners.

IMAX 70mm: The Premium Experience

IMAX 70mm film, also called IMAX 15/70, provides the best theatrical experience when a film shot in this format is projected from an IMAX 70mm print. It features a square 1.43:1 aspect ratio and a large 69.8 x 48.5mm frame size. This format is projected horizontally onto screens measuring up to 59 x 79 feet, designed to fill the viewer's entire field of vision.

The format delivers up to 18K equivalent resolution, ensuring sharp images even on large screens. Projection brightness is achieved using single or dual 15kW water-cooled xenon bulbs, which are up to 7.5 times brighter than those in standard theaters. This technology contributes to a highly immersive viewing experience.

Limitations and Costs

Despite its quality, IMAX 70mm projection is rare, with only about 24 theaters in the US, nine in Canada, and six elsewhere globally. The high cost of production is a significant factor; for example, The Odyssey had a production budget of $250 million and required a new camera system to manage noise. Additionally, each IMAX 70mm projection print reportedly costs around $80,000.

Digital IMAX as an Alternative

While IMAX 70mm offers the highest fidelity, digital IMAX provides a more accessible alternative. Many films are available in both formats, with digital IMAX being more common due to lower production and exhibition costs. For viewers without access to an IMAX 70mm theater, seeing a film shot with a mix of IMAX 70mm and Super Panavision 70mm film, then projected in an IMAX 70mm theater, is considered the next best option.